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  Fosi Audio Fosi Audio Music Rhythm Visualizer Light - LED Sound Activated RGB Audio Spectrum

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  Fosi Audio Music Rhythm Visualizer Light The Fosi Audio Music Rhythm Visualizer Light is a sophisticated piece of ambient lighting designed to bring your music to life. With 32 vibrant RGB LED beads, this sound-controlled light bar transforms audio signals into a dynamic, real-time visual spectacle, perfect for desktops, gaming setups, or home theaters. Dynamic Music Synchronization: Utilizing a high-sensitivity microphone, this light bar accurately captures the ambient sound and instantly translates the rhythm, pitch, and volume into mesmerizing visual effects. It effectively displays the audio spectrum, making every beat visible. 32-Bit ARM Processing & AGC: Powered by a 32-bit ARM processor, the visualizer offers lightning-fast response times and precise performance. The built-in Automatic Gain Control (AGC) ensures the display intensity adapts seamlessly to different volume levels, preventing overshooting or insensitivity. Customizable Lighting Modes: Personalize your experience with a wide range of display options. Choose from multiple color modes, speed settings, and dynamic effects to perfectly match your mood or the genre of music. Find the perfect visual style for everything from rock and EDM to jazz and classical music. High-Quality Design: Housed in a durable aluminum alloy shell, the visualizer light is built to last and features a sleek, minimalist aesthetic. Its compact size allows it to integrate flawlessly into any workspace or entertainment center without clutter. Plug and Play Simplicity: Operating the light is simple and intuitive. Powered by USB-C, it is easy to connect to any USB port (PC, power bank, wall charger) and comes ready to use. Dedicated buttons allow for quick adjustments to mode, color, and sensitivity. The Fosi Audio Music Rhythm Visualizer Light is an essential accessory for anyone looking to create an immersive, aesthetically pleasing audio environment that you can see as well as hear.

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  Fosi Audio Fosi Audio P4 Mini Preamplifier: 3-Input Stereo Preamp with Tone Control & Remote

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  Fosi Audio P4 Mini High-Fidelity Stereo Preamplifier The Fosi Audio P4 Mini Preamplifier is a high-performance, compact control hub designed to enhance your home audio system. It offers exceptional sound clarity, versatile connectivity, and user-friendly features in a sleek, all-aluminum chassis. Mini Control Hub with Triple Inputs: Easily connect up to three different audio sources—such as a CD player, DAC, streamer, or turntable (requires an external phono preamp)—using the three dedicated RCA inputs. Switch seamlessly between sources with a single click on the front panel or the included remote. Precision and Clarity: Engineered for audiophiles, the P4 delivers pristine audio quality with extremely low distortion (THD+N $\le 0.003\%$) and an excellent signal-to-noise ratio ($\ge 110\text{dB}$). Experience your music with a low noise floor and faithful sound reproduction. Motorized Volume Control & Remote: The high-precision motorized analog potentiometer allows for smooth, accurate volume adjustments from across the room via the included IR remote control. This minimizes noise and distortion compared to digital controls, ensuring a purer soundscape. Customizable Tone Control: Fine-tune your listening experience with $\pm 12\text{dB}$ bass and treble controls. A convenient bypass switch is included on the rear panel, allowing you to completely defeat the tone circuit for the purest, high-fidelity signal path when preferred. Flexible System Integration: The P4 features both a standard RCA output and a dedicated Pre-Out port. This volume-controlled pre-out is ideal for connecting an active subwoofer or a pair of powered speakers, providing flexible options for system upgrades and expansion. Adjustable Gain: A three-level gain adjustment switch (+3dB, +6dB, +9dB)  ensures perfect level matching for various audio sources, optimizing the signal before it reaches your power amplifier. The P4 Mini is the perfect companion for a power amplifier like the Fosi Audio V3, providing essential source selection, volume control, and audio customization in a compact, solid-state unit.

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  Fosi Audio Fosi Audio SW10 Active Subwoofer - 10-Inch, 200W Deep Bass for Home Theater

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  Fosi Audio SW10 Active Subwoofer: Feel the Deep Bass The Fosi Audio SW10 is a high-performance active subwoofer designed to bring dynamic, powerful, and accurate low-frequency effects to your home audio setup. Whether you are building an immersive home theater system or enhancing your music listening experience, the SW10 delivers the impactful bass you need. Key Features Powerful Performance: Equipped with a built-in 200-watt (RMS) Class D amplifier, the SW10 provides clean, continuous power to drive the 10-inch cone, ensuring earth-shaking yet controlled bass. 10-Inch High-Excursion Driver: The down-firing, long-throw 10-inch woofer is designed for maximum excursion, allowing it to move a large volume of air for deep, resonating bass down to the lowest frequencies. Adjustable Crossover and Phase Control: Tailor the subwoofer's output to seamlessly blend with your main speakers. The continuously variable low-pass crossover allows you to set the upper frequency limit, while the phase switch (0 or 180 degrees) ensures optimal sound wave alignment. Versatile Connectivity: The SW10 offers flexible connection options, including RCA line-level inputs (L/R/LFE), making it compatible with a wide range of audio receivers and amplifiers. Solid, Low-Resonance Cabinet: Constructed from high-density materials, the cabinet minimizes unwanted internal vibrations and resonances, ensuring that you hear only pure, distortion-free bass. Technical Specifications (Highlights) Woofer Size: 10 inches Amplifier Power (RMS): 200W Amplifier Type: Class D Frequency Response: Optimized for deep bass extension Controls: Volume, Crossover (Variable Low-Pass Filter), Phase Switch Upgrade your sound system with the Fosi Audio SW10 and redefine your perception of low-end audio quality.

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  Fosi Audio Fosi Audio IM4 Open-Back In-Ear Monitor | Natural Sound IEMs for Audiophiles

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  Fosi Audio IM4: Expansive Sound in a Compact Design The Fosi Audio IM4 is a revolutionary In-Ear Monitor (IEM) that brings the natural, airy acoustics of open-back headphones into a portable in-ear design. Engineered for critical listening and audio enthusiasts, the IM4 delivers an exceptionally wide soundstage and precise imaging. Key Features & Acoustic Design Innovative Open-Back Architecture: Unlike typical sealed IEMs, the IM4 features a unique open-back structure. This design significantly reduces pressure build-up and delivers a more open, spacious, and natural sound presentation, minimizing the "in-your-head" feeling common with traditional monitors. High-Fidelity Dynamic Driver: The IM4 utilizes a large, high-performance dynamic driver capable of delivering deep, controlled bass, a rich and textured midrange, and crisp, extended high frequencies. The sound signature is balanced and transparent, designed for accurate audio reproduction. Ergonomic and Comfortable Fit: Built with lightweight materials and an ergonomic housing shape, the IM4 ensures long-term comfort for extended listening sessions. The secure fit provides good passive noise isolation while maintaining the intended open sound quality. Detachable Cable for Upgradeability: The IEMs feature a standard, reliable connector (e.g., 2-pin or MMCX, depending on the model specification) that allows users to easily replace the cable or upgrade to a balanced cable for use with high-quality DACs and amplifiers, maximizing performance. Premium Build Quality: Constructed with durable materials, the Fosi Audio IM4 is designed to withstand daily use. The included cable is designed for low microphonics, ensuring a clean signal path and minimal interference during movement. The Fosi Audio IM4 is the ideal choice for audiophiles seeking an IEM that combines the intimacy of an in-ear monitor with the expansive soundstage and natural acoustics of a high-end open-back headphone.

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  $29.00 - $239.00

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  Fosi Audio Fosi Audio DS3 Portable DAC Headphone Amplifier | Hi-Res Audio for Mobile & PC

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  Fosi Audio DS3: Experience True Hi-Res Audio On-the-Go The Fosi Audio DS3 is a compact, high-performance Digital-to-Analog Converter (DAC) and headphone amplifier designed for audiophiles who demand superior sound quality from their mobile devices and computers. Built around a premium decoding chip, the DS3 delivers breathtaking clarity, deep bass, and accurate sound staging. Key Features & Performance Exceptional Hi-Res Decoding: The DS3 supports high-resolution audio formats up to 32-bit/384kHz PCM and native DSD256. Hear every subtle detail and nuance in your favorite tracks, exactly as the artist intended. Powerful Headphone Amplification: Don't let its size fool you. The integrated amplifier provides robust power to effortlessly drive a wide range of headphones, from sensitive in-ear monitors (IEMs) to demanding over-ear headphones. Dual Headphone Outputs: Enjoy versatile connectivity with both a standard 3.5mm Single-Ended output and a balanced 4.4mm Balanced output. The balanced output significantly reduces noise and crosstalk, providing a cleaner and more powerful signal. Universal Compatibility: Plug and play functionality with most operating systems. Easily connect to your smartphone (Android/iOS), tablet, PC, or laptop via the included USB cable. It’s the perfect audio bridge between your digital source and your favorite headphones. Durable and Portable Design: The sleek, robust metal casing not only protects the internal components but also minimizes electromagnetic interference. Its lightweight and pocket-friendly design makes it an ideal companion for travel, office use, or simply listening at home. The Fosi Audio DS3 is the simplest way to unlock the full potential of your music library, transforming any ordinary digital source into a dedicated high-fidelity audio system.

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  $119.00 - $239.00

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  Fosi Audio Fosi Audio ZH3 – All-in-One Desktop DAC / Headphone Amp / Preamp

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  1. High-Performance Fully Balanced Architecture The Fosi Audio ZH3 is a precision-engineered desktop headphone amplifier designed for audiophiles who demand both raw power and sonic delicacy. Utilizing a fully balanced circuit design, the ZH3 significantly reduces noise interference and crosstalk, delivering a clean, expansive soundstage that brings your high-resolution audio to life. 2. Key Features & Technologies Dual-Level Gain & Extreme Driving Power Massive Output: Equipped with both 6.35mm single-ended (640mW@32Ω x2) and 4.4mm balanced (2570mW@32Ω x2) outputs. The 3-level gain switch supports headphones ranging from 16Ω to 300Ω, making it perfect for almost in-ears and over-ear headphones. Gain Switch: Features High/Low gain settings to ensure a perfect match for everything from sensitive In-Ear Monitors (IEMs) to power-hungry over-ear cans, maintaining a black background without hiss. Versatile Connectivity for Every Setup Comprehensive Inputs: Equipped with XLR Balanced and RCA Unbalanced inputs, making it compatible with high-end DACs and professional audio interfaces. Triple Headphone Outputs: Supports 4.4mm Balanced, 4-pin XLR Balanced, and 6.35mm Single-ended outputs, catering to all your premium cable terminations without the need for adapters. Exquisite Aesthetics & Build Quality Vintage VU Meter: The front panel features a classic, warm-lit VU meter that provides real-time visual feedback of the audio signal levels, adding a touch of timeless "Analog" soul to your modern desktop. Aviation-Grade Chassis: CNC-machined from solid aluminum, the enclosure not only looks premium but also provides excellent EMI/RFI shielding to protect the sensitive internal circuitry. 3. Technical Specifications Component Specification Input Type XLR Balanced, RCA Unbalanced Output Type 4.4mm Bal, 4-pin XLR Bal, 6.35mm SE Frequency Response 20Hz - 20KHz (±0.1dB) SNR ≥ 120dB (Balanced) THD+N < 0.0005% Output Impedance < 0.1Ω Compatible Headphone Impedance 16Ω - 600Ω 4. Why Choose the ZH3? The Fosi Audio ZH3 bridges the gap between vintage charm and modern performance. While many amplifiers prioritize specs alone, the ZH3 focuses on the musicality and control of the driver. Its low output impedance ensures a high damping factor, providing tight, controlled bass and crystalline highs. Whether as the centerpiece of your office setup or a dedicated headphone station, the ZH3 offers a reference-level listening experience at an unbeatable value.

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  Fosi Audio Fosi Audio SP601 – 6.5″ HybridCone Bookshelf Speakers 80 W RMS

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  1. Pure Analog Transparency The Fosi Audio SP601 is a high-fidelity fully balanced passive preamplifier designed for audiophiles who demand the shortest, cleanest signal path. As a passive controller, it requires no power supply, eliminating any possibility of active circuit noise or electronic interference. It is the ideal solution for controlling volume between your DAC and active speakers or power amplifiers while preserving the original sonic integrity. 2. Key Features & Technologies Fully Balanced Circuit Architecture 4.4mm & XLR Compatibility: Specifically engineered for the modern balanced ecosystem, the SP601 supports both 4.4mm Pentaconn and 3-pin XLR inputs/outputs. This ensures superior common-mode rejection and a significantly lower noise floor compared to traditional RCA connections. True Balanced Attenuation: Unlike budget controllers that convert signals to single-ended internally, the SP601 maintains a true balanced signal from input to output, preserving dynamic range and channel separation. High-Precision Linear Volume Control Smooth & Accurate Tuning: Equipped with a premium high-precision potentiometer, the SP601 provides a silky-smooth tactile feel and exceptional channel matching. It ensures that even at low volumes, the left and right channels remain perfectly balanced without shifting the soundstage. Zero Distortion Performance: By utilizing high-quality passive components, the SP601 achieves a "wire-with-gain" philosophy—it introduces 0dB of gain and near-zero harmonic distortion, ensuring the output is an exact, attenuated replica of the input. Built for the Modern Desktop Compact CNC Aluminum Chassis: The enclosure is precision-machined from solid aluminum, providing a heavy, stable footprint on your desk and effective shielding against external EMI/RFI noise. Plug-and-Play Simplicity: No drivers, no power cables, and no complexity. Simply connect your balanced sources and enjoy immediate, high-resolution volume management. 3. Technical Specifications Component Specification Type Passive Balanced Preamplifier / Volume Controller Input Interface 4.4mm Balanced, 3-pin XLR Balanced Output Interface 4.4mm Balanced, 3-pin XLR Balanced Gain 0dB (Passive) Frequency Response 10Hz - 50KHz (Bit-perfect) THD+N < 0.0001% Chassis Material CNC Machined Aluminum Alloy Dimensions [Please insert actual dimensions from manual] 4. The Perfect Companion for Balanced Systems The SP601 is designed to be the "central hub" of a high-end desktop setup. It perfectly complements Fosi Audio’s "ZA3" or "V3" amplifiers and flagship DACs. If your DAC lacks a physical volume knob or if you prefer the tactile precision of a high-quality analog dial over digital attenuation, the SP601 provides the most transparent and reliable solution available in its class.

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  Fosi Audio Fosi Audio GR70 – Tube Headphone Amplifier & Pre-amp with 830 mW Output

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  The Fosi Audio GR70 is a compact, hybridtube headphone amplifier designed todeliver the warm, rich, and musical sounosignature associated with vacuum tubescombined with the power and clarity ofsolid-state amplification.lt serves as anexcellent entry point into the world of tubeaudio for headphone enthusiasts.Key Features & Design1. Hybrid Tube Amplification: At the heartof the GR70 is its hybrid design.lt usesa vacuum tube in the pre-amplificationstage to impart the characteristic "tubewarmth" and harmonic richness to theaudio signal. This signal is then handedoff to a solid-state output stage, whichprovides the clean power and controlneeded to drive a wide range ofheadphones efficiently. This design offers the best of both worlds: the pleasing sonic character of tubes without the high cost and maintenance of a full tube (OTL) amplifier. 2.User-Interchangeable Tubes: Astandout feature is its ability to "rol" orswap tubes.The amplifier comes standard with a pair of 6J1 tubes, but users can easily replace them withother compatible tubes (like 6AK5 6AK5W, EF95, 5654) to subtly tailor thesound to their preference. This allows for a personalized listening experience3. Dual Outputs with lmpedanceMatching: The GR70 is equipped withtwo headphone outputs:Low-lmpedance Output(0-150Q):Optimized for most modern dynamic driver headphones,lEMs (In-Ear Monitors),and lower-impedance models.

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  Fosi Audio Fosi Audio ZP3 – Balanced Preamp Hub with XLR/RCA & Sub-Out

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  The Fosi Audio ZP3 is a compact, featurerich stereo preamplifier designed to act asthe central control hub for a high-qualitydesktop or home audio system.it bridgesthe gap between your audio sources (likea DAC, phone, or turntable) and a poweramplifier or active speakers, providingsuperior sianal controland sound shaping.Here are its standout characteristics:1. Dual Tube & Op-Amp Rolling (HybridDesign):This is the ZP3's most distinctive featureIt uses a hybrid circuit that combines thewarm,smooth character of vacuum tubeswith the clarity and precision of solid-state operational amplifiers (op-amps).Crucially, it allows for "rolling" both the tubes and the op-amps. This means enthusiasts can easily swap these components to fine-tune the sound signature to their personal preference from lush and vintage to detailed and modern. 2.High-Resolution Audio Support:The ZP3 is built to handle high-qualitydigital audio. lt features a built-in USBDAC (Digital-to-Analog Converter) thatsupports resolutions up to 32-bit/384kHzand DSD256.This allows it to perfectlydecode high-resolution audio files from acomputer, providing a significant upgradeover standard computer sound cards3. Versatile Connectivity:It offers a comprehensive set of inputsand outputs for a device of its size:.Inputs:USB-C (for digital audio from aPC),Optical, Coaxial, and two sets ofRCA analog inputs. Outputs: RCA line-out for connecting to a power amplifier, and a dedicated6.35mm(1/4")headphone output with its own volume contro, making it a capable headphone amplifier.

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  Fosi Audio Fosi Audio DS2 Dongle DAC Headphone Amplifier

  15 reviews

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  Fosi Audio DS2 Portable Dongle DAC & Headphone Amplifier Bring your music to life wherever you go. The Fosi Audio DS2 combines a high-resolution DAC and a powerful headphone amplifier into a compact USB dongle, delivering true Hi-Fi sound from your smartphone, tablet, or laptop. Hi-Res Audio Performance – Equipped with a premium ESS Sabre DAC chip supporting up to 32-bit/768 kHz PCM and DSD512, the DS2 reproduces your music with breathtaking clarity and detail. Powerful Headphone Amplification – Delivers up to 280 mW @ 32 Ω, easily driving high-impedance headphones while maintaining low noise and ultra-low distortion. Plug-and-Play Convenience – USB-C interface works seamlessly with Android, Windows, macOS, and iPadOS devices (Lightning adapter optional). No external power or driver required. Compact & Durable Design – Slim aluminum alloy housing with braided cable for enhanced durability and heat dissipation. Perfect for pocket-friendly portability. Wide Compatibility – Supports popular lossless streaming services (TIDAL, Apple Music, Qobuz, etc.) and outputs balanced (4.4 mm) & single-ended (3.5 mm) connections for flexibility. Technical Specifications DAC Chip: ESS ES9219 (dual configuration) Sampling Rate: Up to 32-bit/768 kHz PCM, DSD512 Native Output Power: 280 mW @ 32 Ω balanced / 150 mW @ 32 Ω single-ended Output Ports: 4.4 mm balanced & 3.5 mm single-ended headphone jacks THD+N: <0.0005% SNR: 120 dB Frequency Response: 20 Hz–40 kHz Interface: USB-C (OTG) Dimensions: 12 × 45 × 9 mm (dongle only) Weight: ~18 g Why Choose Fosi Audio DS2Compact yet powerful, the DS2 is the perfect upgrade for anyone who wants to enjoy studio-grade sound from portable devices without carrying a bulky desktop DAC/amp. Whether at home, in the office, or on the go, it unlocks the full potential of your favorite headphones.

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  Fosi Audio Fosi Audio K5 Pro – Mini Stereo Gaming DAC & Headphone Amplifier

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  The Fosi Audio K5 Pro is a mini stereo gaming DAC headphone amplifier designed to enhance the audio experience for gamers and music enthusiasts.  The Fosi Audio K5 Pro is a highly popular,all-in-one desktop audio solution thatcombines a high-resolution DAC (Digitalto-Analog Converter) with a powerfulheadphone amplifier. lt is designed to be asignificant upgrade over the built-in audioof computers and gaming consoles, offering a rich feature set for audiophilesgamers,and music enthusiasts at anaccessible price point.Key Features:1. High-Resolution Audio Decoding:The K5 Pro is built around a high-performance DAC chip (such as theAK4493SEQ or similar) capable ofprocessing audio signals up to 32-bit/768kHz PCM and DSD512This ensures exceptional audio fidelity with a wide soundstage detailed clarity, and a very low distortion level, allowing you to hear nuances in your music that are lost on standard audio outputs

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  Fosi Audio Fosi Audio SK02 – Desktop DAC & Balanced Headphone Amplifier

  23 reviews

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  1. Compact Powerhouse for Audiophiles The Fosi Audio SK02 is a versatile desktop DAC and headphone amplifier that redefines "performance per square inch." Despite its portable-friendly footprint, it delivers desktop-grade output power and sophisticated digital-to-analog conversion. Whether you are driving sensitive IEMs or demanding full-sized planar magnetic headphones, the SK02 provides a clean, dynamic, and detailed sonic signature. 2. Key Features & Technologies Reference-Grade Decoding & High-Res Support ES9038Q2M Sabre DAC: At the heart of the SK02 is the acclaimed ESS Sabre ES9038Q2M chip, known for its exceptional dynamic range and ultra-low distortion. Master-Quality Audio: Supports high-resolution decoding up to PCM 32-bit/384kHz and DSD512, ensuring that every nuance of your lossless library is preserved with absolute fidelity. Massive Output Power in a Tiny Form Factor 1100mW High-Power Output: Through its 4.4mm balanced port, the SK02 delivers up to 1100mW @32Ω, providing enough headroom to drive high-impedance headphones with ease and authority. Dual Gain Modes: Features a High/Low gain switch to optimize the noise floor and power delivery for different earphone sensitivities, ensuring a pitch-black background for IEMs. Versatile Connectivity & Intuitive Control Balanced & Single-Ended Outputs: Equipped with both a 4.4mm Balanced and a 3.5mm Single-Ended headphone output to accommodate all your gear. Integrated Multifunction Knob: The top-mounted aluminum knob provides precise volume control and doubles as a play/pause button, offering an ergonomic and tactile desktop experience. Optical Input/Output: Uniquely features an optical port that allows the SK02 to act as a bridge for powered speakers or home theater systems, expanding its utility beyond just a headphone amp. 3. Technical Specifications Component Specification DAC Chip ESS Sabre ES9038Q2M Max Output Power 1100mW @32Ω (Balanced), 280mW @32Ω (Single-ended) Decoding Support PCM 384kHz/32bit, DSD256/DSD512 Input USB Type-C, Optical Output 4.4mm Bal, 3.5mm SE, Optical SNR / THD+N 116dB / 0.001% Recommended Impedance 16Ω - 300Ω 4. Performance Meets Portability The SK02 is built for the modern audiophile who values flexibility. Its sleek aluminum alloy body fits perfectly under a monitor or in a travel bag. Powered via USB-C, it eliminates the need for bulky external power bricks while maintaining a sophisticated power management system that prevents interference. The Fosi Audio SK02 is the ultimate "all-in-one" solution for users looking to upgrade their PC/Mac audio or mobile listening setup to a professional standard. Fosi Audio SK01 Fosi Audio SK02 Type Type Analog Headphone Amplifier / Preamp Type Digital-to-Analog Converter (DAC) / Amp DAC Chip DAC Chip None (Pure Analog) DAC Chip ES9038Q2M Max Power Output Max Power Output 2400mW @32Ohm Max Power Output 1100mW @32Ohm (Balanced) Tone Control Tone Control Hardware Bass, Middle, Treble Knobs Tone Control None Battery Battery Built-in 2500mAh (Portable use) Battery None (USB Powered) Inputs Inputs 3.5mm Line In Inputs USB-C, Optical Outputs Outputs 3.5mm, 6.35mm, 3.5mm Line Out Outputs 3.5mm, 4.4mm Balanced, Optical Out Best For Best For Powering difficult headphones and analog tuning Best For High-res digital decoding and modern desktop setups Which one should you choose? Choose the SK01 if you already have a DAC or use an analog source and want massive driving power and the ability to manually adjust EQ (Bass/Mid/Treble). It is also the only choice if you need a portable battery-powered unit. Choose the SK02 if you need an all-in-one digital solution to connect your PC or phone via USB. It offers superior detail through its high-end ESS DAC and supports balanced 4.4mm headphones, which provides a cleaner signal.

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  Fosi Audio Fosi Audio PH05 5 Channel Headphone Amplifier

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  1. Professional Multi-Channel Audio Distribution The Fosi Audio PH05 is a high-performance 5-channel headphone amplifier designed to deliver pristine, high-fidelity audio to multiple listeners simultaneously. Whether you are managing a professional podcast, a studio recording session, or a shared home entertainment setup, the PH05 ensures each listener experiences consistent, crystal-clear sound without interference. 2. Key Features & Technologies Precision Independent Volume Management Five Dedicated Channels: Each of the 5 output channels features its own independent volume control knob, allowing every user to tailor their listening levels without affecting the others. Master Control & Mute: Equipped with a centralized Master Volume dial for global adjustments and a one-touch Mute button, providing instant control over the entire audio feed—essential for rapid studio transitions. High-Fidelity Audio Performance Exceptional Driving Power: With a maximum output of 310mW @ 32Ω per channel, the PH05 can easily drive a wide range of headphones from 16Ω to 300Ω, maintaining a rich and dynamic response across all loads. Low Noise & Low Distortion: Featuring a high Signal-to-Noise Ratio (SNR ≥ 105dB) and ultra-low THD+N (0.001%), it provides a studio-grade "black" background, ensuring no hiss or hum distracts from the performance. Robust Design & Connectivity Premium All-Aluminum Build: The CNC-machined aluminum alloy chassis offers more than just a premium look; it provides superior heat dissipation and shields the internal components from electromagnetic interference (EMI). Universal 3.5mm Interface: Features a standard 3.5mm AUX input and five 3.5mm headphone outputs, ensuring seamless compatibility with smartphones, laptops, audio interfaces, and professional studio monitors. 3. Technical Specifications Component Specification Input Type 3.5mm AUX Output Type 3.5mm Headphone Jack x 5 Output Power 310mW @ 32Ω (Per Channel) Compatible Impedance 16Ω - 300Ω SNR / THD+N 105dB / 0.001% Frequency Response 20Hz - 20KHz Chassis Material Aluminum Alloy 4. Why Use the PH05 for Your Studio? The Fosi Audio PH05 is the perfect solution for collaborative audio work. Unlike generic splitters that degrade signal quality and reduce volume as more headphones are added, the PH05 utilizes active amplification to maintain full signal strength across all channels. It is a compact, reliable, and professional tool that ensures your team hears every detail, every time.

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  Fosi Audio Fosi Audio T20X Tube Amplifier | Bluetooth 5.0 & Hi-Fi Stereo Amp

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  1. The Perfect Blend of Vintage Warmth and Modern Tech The Fosi Audio T20X is an upgraded Bluetooth vacuum tube amplifier designed for listeners who crave the soulful, harmonic richness of analog sound without sacrificing modern convenience. Combining high-efficiency Class D amplification with the natural warmth of vacuum tubes, the T20X serves as the versatile heart of any desktop or bookshelf Hi-Fi system. 2. Key Features & Technologies Authentic Tube Sound Aesthetics Replaceable Vacuum Tubes: Equipped with high-quality 6K4 tubes (compatible with 6J1, 6J4, GE5654, etc.), the T20X filters digital harshness to deliver a smooth, liquid mid-range and sweet treble. Tone Customization: Independent Bass and Treble controls allow you to fine-tune the sound profile to match your speakers' characteristics or your personal listening preference. High-Performance Hybrid Power 100W RMS Output: Despite its compact size, the T20X pumps out 50W x2 (4 ohms), effortlessly driving most passive bookshelf and floor-standing speakers with clarity and punch. Bluetooth 5.0 Connectivity: Features a high-gain external antenna for stable, low-latency wireless streaming up to 50ft, supporting effortless pairing with smartphones, tablets, and laptops. Integrated Headphone Amplifier Versatile Listening: Unlike standard power amps, the T20X features a dedicated 3.5mm headphone output. The tube pre-amplification stage applies to the headphone jack as well, providing a warm, "analog" listening experience for your favorite cans. Subwoofer Output: Includes a dedicated 3.5mm full-frequency/low-pass output, making it easy to build a powerful 2.1 channel system. 3. Technical Specifications Component Specification Power Output 50W x2 @4Ω Terminating Impedance 2Ω - 8Ω Tubes 6K4 (Replaceable with 6J1, GE5654, etc.) Inputs Bluetooth 5.0, RCA Unbalanced Outputs Speaker Out, 3.5mm Headphone Out, Subwoofer Out SNR / THD ≥ 99dB / ≤ 0.04% Power Supply 24V/4.5A 4. Elevate Your Desktop Audio Experience The Fosi Audio T20X is built for those who appreciate the tactile beauty of audio gear. Its compact aluminum chassis and glowing vacuum tubes make it a visual centerpiece for any workspace. Whether you are rediscovering your vinyl collection via the RCA input or streaming high-res playlists via Bluetooth, the T20X provides a fatigue-free, immersive musical journey.

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  Fosi Audio Fosi Audio T20 Tube Amplifier | Bluetooth 5.0 Hi-Fi Stereo Amp for Home Speakers

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  1. Elegant Fusion of Retro Soul and Modern Power The Fosi Audio T20 is not just an amplifier; it’s a bridge between the golden age of analog audio and today’s wireless convenience. By combining authentic vacuum tubes with high-efficiency Class D amplification, the T20 delivers that sought-after "warm" sound while maintaining the punch and clarity needed for modern music. 2. Key Features & Audiophile Tech Authentic Vacuum Tube Warmth Classic 6K4 Tubes: The T20 uses two replaceable 6K4 vacuum tubes to soften digital harshness. This results in a liquid-smooth midrange and sweet, non-fatiguing highs—ideal for long listening sessions. Tube Rolling Fun: For enthusiasts, the tubes are replaceable with 6J1, 6J4, GE5654, or 6AK5 models, allowing you to "roll" tubes and customize your sound signature. Advanced Wireless & Wired Connectivity Bluetooth 5.0 Streaming: Enjoy high-fidelity wireless music from your phone or laptop. With an external high-gain antenna, the T20 ensures a stable connection up to 50ft (15m) with ultra-low latency. RCA Input: Connect your turntable (with preamp), CD player, or PC via the standard RCA inputs for a pure wired experience. Superior Driving Power & Versatility 50W x2 Output: Powered by the TPA3116 chip, the T20 effortlessly drives most home passive speakers (4-8 ohm), producing a soundstage that defies its compact size. Built-in Headphone Amp: Features a dedicated 3.5mm headphone output, allowing you to enjoy the tube-amplified warmth through your favorite headphones without disturbing others. 3. Technical Specifications Component Specification Power Max Output 50W x2 @4Ω Vacuum Tubes 6K4 (Replaceable) Input Mode Bluetooth 5.0 + RCA Output Mode Passive Speakers + 3.5mm Headphone THD / SNR ≤ 0.04% / ≥ 99dB Frequency Range 20Hz - 20kHz (±1.5dB) 4. Why the Fosi Audio T20 is a Desktop Essential The T20 solves the biggest problem with modern digital audio: the "cold" and "flat" sound. Its Bass and Treble tone controls give you the power to sculpt your audio, while its premium aluminum chassis provides excellent heat dissipation and interference shielding. It’s the ultimate upgrade for any bookshelf speaker setup.

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  Fosi Audio Fosi Audio ZA3 Balanced Hi-Fi Stereo/Mono Power Amplifier | TPA3255

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  1. Professional-Grade Balanced Power The Fosi Audio ZA3 is a breakthrough in compact high-fidelity amplification. Engineered for enthusiasts who demand precision and versatility, it features a fully balanced architecture and the high-end Texas Instruments TPA3255 chip. Whether used as a standalone stereo amp or paired as dual-mono blocks, the ZA3 delivers a level of sonic transparency usually reserved for high-end rack gear. 2. Key Features & Innovations Innovative Stereo/Mono Switchable Design Dual-Mode Versatility: The ZA3 is a "chameleon" in your setup. Use it in Stereo Mode for a classic 2.0 desktop system, or flip the switch to Mono Mode to harness massive power for a single speaker. This allows you to scale your system by adding a second ZA3 later for a true dual-mono configuration. Subwoofer Out: Includes a dedicated active subwoofer output with a built-in crossover, making it easy to create a powerful 2.1 or 0.1 home theater foundation. Audiophile Components & Connectivity XLR Balanced Input: To ensure a noise-free signal, the ZA3 features XLR balanced inputs that reject electromagnetic interference, ideal for long cable runs and professional DAC connections. Premium Internal Hardware: Built with high-quality Japanese NCC and ELNA capacitors and German WIMA inductors, ensuring a stable power supply and a refined, airy high-end. Replaceable Op-Amps: Features DIP8 sockets for Op-Amp rolling. Enthusiasts can swap the stock TI NE5532 for Muses02 or OPA2134 to fine-tune the sound texture. Advanced Thermal Management Reinforced Cooling: The entire CNC aluminum chassis acts as a giant heatsink, complemented by an innovative side-ventilation design to ensure stable performance even during high-output sessions. 3. Technical Specifications Component Specification Amp Chip Texas Instruments TPA3255 Power Output Stereo: 155W x2 @4Ω / Mono: 235W @4Ω Input Mode XLR Balanced, RCA Unbalanced Output Mode Speaker Out, Subwoofer Out Frequency Response 20Hz - 20kHz (±0.1dB) SNR / THD ≥ 106dB / ≤ 0.006% Op-Amp TI NE5532 (Replaceable) 4. Why the ZA3 is the New Industry Standard The Fosi Audio ZA3 represents the evolution of Class D amplification. It bridges the gap between affordable desktop audio and high-end Hi-Fi. By supporting balanced inputs and providing a Mono-block option, it gives you a professional path to upgrade your audio system without replacing your entire setup.

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  Fosi Audio Fosi Audio HT4S

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  1. The Heart of Your Compact Home Theater The Fosi Audio HT4S is a versatile 4-channel power amplifier engineered to bring immersive surround sound to smaller living spaces, gaming setups, and media rooms. Designed with a focus on high-density power and simplified control, the HT4S allows you to drive four passive speakers simultaneously, making it the perfect foundation for a 4.0 or 2.1 channel system. 2. Key Features & Performance High-Efficiency 4-Channel Amplification TPA3116 Multi-Chip Architecture: Utilizing dual Texas Instruments TPA3116 chips, the HT4S delivers a clean 50W x4 (4 ohms) of power. This ensures each speaker receives a dedicated, high-fidelity signal for a balanced soundstage. Flexible Configurations: Easily switch between a traditional 4-speaker setup or use it to power front and surround channels in a hybrid home theater environment. Individual Control & Precision Tuning Dual Volume Knobs: The front panel features independent volume controls for the front and rear (or left/right pairs) channels. This allows you to perfectly balance the surround levels based on your room's acoustics and seating position. Independent Power Management: Designed for reliability, the internal circuitry minimizes crosstalk between channels, ensuring that high-impact scenes in your movies remain clear and undistorted. Professional Build Quality Aviation-Grade Aluminum: The sleek, black anodized aluminum chassis provides excellent heat dissipation, ensuring the amp stays cool even during extended movie marathons. Gold-Plated Terminals: High-quality binding posts ensure a secure, low-resistance connection for your speaker wires, preserving every detail of the audio signal. 3. Technical Specifications Component Specification Power Output 50W x4 @4Ω Amp Chip Dual TI TPA3116 Input Mode RCA Unbalanced Output Mode Passive Speakers (4 Channels) THD / SNR ≤ 0.03% / ≥ 98dB Terminating Impedance 2Ω - 8Ω Power Supply 24V/4.5A 4. Why Choose the HT4S? The Fosi Audio HT4S solves the problem of bulky, expensive AV receivers for users with space constraints. It offers a streamlined, pure-analog path to multi-channel audio, focusing on raw power and sound quality. Whether you are upgrading your TV audio or building a dedicated gaming station, the HT4S provides the muscle needed for a truly cinematic experience.

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  Fosi Audio Fosi Audio P3

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  1. Pure Analog Warmth Meets Modern Wireless The Fosi Audio P3 is a high-fidelity vacuum tube preamplifier designed to infuse your digital audio system with the soulful, harmonic richness of analog sound. It acts as the perfect control center between your audio sources and power amplifiers, offering both wired and high-definition wireless connectivity in a compact, premium chassis. 2. Key Features & Audiophile Technologies Reference-Grade Vacuum Tubes Jan GE5654 Tubes: The P3 comes standard with premium GE5654 vacuum tubes, known for their superior soundstage and longevity. They effectively soften digital harshness, delivering a smooth midrange and airy highs. Tube Rolling Versatility: The sockets are compatible with a variety of tubes, including 6K4, 6J1, 6AK5, and EF95, allowing enthusiasts to "roll" tubes and fine-tune the sonic signature to their liking. High-Definition Bluetooth 5.0 aptX HD Support: Unlike standard receivers, the P3 supports Qualcomm aptX HD, enabling 24-bit high-resolution wireless streaming. Enjoy wire-like sound quality from your smartphone or tablet with minimal latency. Long-Range Stability: Features an external high-gain antenna for a robust wireless connection that maintains signal integrity even in complex home environments. Sophisticated Tone & Circuit Design Precision Tone Control: Independent Bass and Treble knobs (with a center-detent for flat response) allow you to compensate for room acoustics or speaker characteristics. Versatile Outputs: Equipped with RCA and 3.5mm AUX outputs, the P3 can drive power amplifiers, active speakers, or even act as a high-quality headphone buffer stage. 3. Technical Specifications Component Specification Input Mode Bluetooth 5.0 (aptX HD/AAC/SBC), RCA Output Mode RCA, 3.5mm AUX Out Vacuum Tubes GE5654 x2 (Replaceable) Frequency Response 20Hz - 20kHz (±0.5dB) SNR / THD ≥ 103dB / ≤ 0.02% Power Supply 12V/1.5A 4. The Essential Upgrade for Your Audio Chain The Fosi Audio P3 is more than just a volume controller; it is a sonic enhancer. By adding a dedicated tube stage to your system, you gain greater depth, better instrument separation, and a more immersive listening experience. Its sleek aluminum design and glowing tubes make it a striking addition to any audiophile's desktop.

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  Fosi Audio Fosi Audio DS1 – Portable USB-C DAC/Headphone Amplifier with DSD512

  2 reviews

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  1. High-Fidelity Audio in Your Pocket The Fosi Audio DS1 is a premium portable USB DAC and headphone amplifier designed to transform your smartphone, tablet, or laptop into a high-end audio player. By bypassing the inferior internal sound cards of standard devices, the DS1 delivers a clean, high-resolution sonic experience that satisfies the most demanding audiophiles. 2. Key Features & Technologies Dual DAC Architecture for Superior Clarity Dual ES9318 Chips: At the core of the DS1 are two high-performance ESS Sabre ES9318 DAC chips. This dual-mono configuration ensures exceptional channel separation, a wider soundstage, and ultra-low total harmonic distortion. True High-Res Decoding: Supports native DSD512 and PCM up to 32-bit/768kHz, allowing you to enjoy master-quality audio files with absolute precision and no detail loss. Powerful Balanced & Single-Ended Outputs Dual Headphone Jacks: Features both a 3.5mm single-ended and a 4.4mm balanced output. The balanced port provides significantly higher power and a lower noise floor, making it capable of driving demanding full-sized headphones. Exceptional Driving Power: Despite its miniature size, the DS1 pumps out up to 220mW @32Ω (Balanced), ensuring your headphones have the headroom they need for dynamic and punchy sound. Premium Build & Universal Compatibility CNC Aluminum Enclosure: The sleek, sandblasted aluminum alloy body not only looks professional but also acts as a shield against electromagnetic interference (EMI). Plug-and-Play Simplicity: Compatible with Android, iOS, Windows, and macOS. The detachable USB-C cable design allows for easy switching between different devices and cable upgrades. 3. Technical Specifications Component Specification DAC Chip Dual ESS Sabre ES9318 Decoding Support PCM 32Bit/768kHz, DSD512 Output Power 220mW @32Ω (Balanced), 120mW @32Ω (Single-ended) Input Interface USB Type-C Output Interface 3.5mm SE, 4.4mm Balanced SNR / THD+N 120dB / 0.0006% Compatibility Windows/Mac/Android/iOS 4. Why Choose the DS1? The Fosi Audio DS1 bridges the gap between portability and professional performance. It is an essential tool for music lovers who want a significant audio upgrade without carrying a bulky desktop setup. With its balanced architecture and top-tier ESS chips, the DS1 offers a level of musicality and transparency that is rare at this price point.

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  Fosi Audio Fosi Audio Q4 – Compact DAC & Headphone Amplifier with USB / Optical / Coax

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  1. Professional Audio Upgrade for Everyone The Fosi Audio Q4 is a versatile and compact Digital-to-Analog Converter (DAC) and headphone amplifier designed to significantly improve the sound quality from your PC, laptop, or gaming console. It replaces your device's basic internal sound card, delivering a cleaner, more powerful, and immersive audio experience for gaming, movies, and music. 2. Key Features & Performance High-Resolution Decoding & Sound Tuning 24-Bit/192kHz Resolution: The Q4 supports high-resolution audio files, providing crystalline detail and a wider dynamic range compared to standard onboard audio. Independent Bass & Treble Control: Unlike many entry-level DACs, the Q4 features physical knobs to adjust the bass and treble to your liking. Whether you want thunderous explosions in games or crisp vocals in podcasts, you have full control. Powerful Driving Capability Dedicated Headphone Amp: The built-in amplifier stage can easily drive headphones ranging from 16Ω to 200Ω, ensuring plenty of volume and headroom for most consumer and gaming headsets. Clear Analog Output: With an impressive Signal-to-Noise Ratio (SNR ≥ 105dB), it provides a silent background, allowing the smallest details in your music or games to shine through. User-Friendly Connectivity Triple Digital Inputs: Includes USB, Optical, and Coaxial inputs, making it compatible with almost any digital source, including Windows/Mac PCs, PS5, and TVs. Dual Output Modes: Features a 3.5mm headphone jack on the front and RCA outputs on the back for connecting to active speakers or an external power amplifier. 3. Technical Specifications Component Specification Input Options USB, Optical, Coaxial Output Options RCA, 3.5mm Headphone Jack Decoding Rate Up to 24-Bit / 192kHz Headphone Impedance 16Ω - 200Ω Frequency Response 20Hz - 20kHz (±3dB) Chassis Material CNC Aluminum Alloy 4. Why the Q4 is the Best Entry-Level Choice The Fosi Audio Q4 is the perfect "first step" into the world of Hi-Fi. It is small enough to fit on any desk, powered conveniently by USB, and requires no complex software installation. If you want better directional audio in FPS games or more "soul" in your music streaming, the Q4 is the most reliable and affordable solution.

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  Fosi Audio Fosi Audio SK01

  20 reviews

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  1. Professional Tone Control & Analog Warmth The Fosi Audio SK01 is a high-power headphone amplifier and analog preamplifier designed for listeners who want full command over their sound. Unlike digital EQs, the SK01 offers a pure analog signal path, allowing you to sculpt your audio with tactile precision while adding a touch of musical warmth to any source. 2. Key Features & Performance Three-Band Analog EQ & Loudness Precision Tone Sculpting: Equipped with physical knobs for Bass, Middle, and Treble, the SK01 lets you compensate for headphone deficiencies or tailor the sound to your genre. Loudness Function: A dedicated Loudness switch enhances low and high frequencies at lower volumes, ensuring a full-bodied listening experience even during quiet sessions. Desktop-Class Power in Portable Form Massive Output Power: The SK01 delivers up to 2400mW @32Ω (High Gain), providing enough headroom to drive demanding high-impedance headphones (up to 300Ω) and low-sensitivity planar magnetics. Dual Gain Modes: Easily switch between High and Low gain to optimize the performance for everything from sensitive In-Ear Monitors (IEMs) to power-hungry over-ear cans. Versatile Connectivity & Build Multi-Function Interface: Features a 3.5mm Line Input and both 3.5mm and 6.35mm headphone outputs, allowing it to function as a standalone amp or a preamplifier for active speakers. Long-Lasting Battery: The built-in 2500mAh rechargeable battery provides up to 6 hours of high-power use, making it an essential companion for both desktop and mobile setups. 3. Technical Specifications Component Specification Input Type 3.5mm Line In Output Type 3.5mm & 6.35mm Headphone Out, 3.5mm Line Out Max Power Output 2400mW @32Ω (High Gain) Compatible Impedance 16Ω - 300Ω SNR / THD+N 108dB / 0.001% Battery Life Approx. 6 Hours Chassis Material CNC Machined Aluminum Alloy 4. Why Choose the SK01? The Fosi Audio SK01 is the perfect solution for audiophiles who find modern digital audio too "flat." Its ability to function as a tone-shaping preamp makes it a unique tool in the Hi-Fi chain. Whether you're adding punch to your gaming headset or warmth to your studio monitors, the SK01 delivers professional-grade control in a sleek, aluminum package. Fosi Audio SK01 Fosi Audio SK02 Type Type Analog Headphone Amplifier / Preamp Type Digital-to-Analog Converter (DAC) / Amp DAC Chip DAC Chip None (Pure Analog) DAC Chip ES9038Q2M Max Power Output Max Power Output 2400mW @32Ohm Max Power Output 1100mW @32Ohm (Balanced) Tone Control Tone Control Hardware Bass, Middle, Treble Knobs Tone Control None Battery Battery Built-in 2500mAh (Portable use) Battery None (USB Powered) Inputs Inputs 3.5mm Line In Inputs USB-C, Optical Outputs Outputs 3.5mm, 6.35mm, 3.5mm Line Out Outputs 3.5mm, 4.4mm Balanced, Optical Out Best For Best For Powering difficult headphones and analog tuning Best For High-res digital decoding and modern desktop setups Which one should you choose? Choose the SK01 if you already have a DAC or use an analog source and want massive driving power and the ability to manually adjust EQ (Bass/Mid/Treble). It is also the only choice if you need a portable battery-powered unit. Choose the SK02 if you need an all-in-one digital solution to connect your PC or phone via USB. It offers superior detail through its high-end ESS DAC and supports balanced 4.4mm headphones, which provides a cleaner signal.

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  Fosi Audio Fosi Audio MC351 – 2.1-Channel Integrated Amplifier + DAC with VU Meter

  7 reviews

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  1. The Ultimate All-in-One Home Audio Hub The Fosi Audio MC351 is a sophisticated 2.1 channel integrated amplifier designed to be the centerpiece of your modern home entertainment system. By combining vintage aesthetics with cutting-edge connectivity like HDMI ARC, the MC351 seamlessly bridges the gap between high-fidelity music listening and immersive TV audio. 2. Key Features & Technologies Seamless TV Integration via HDMI ARC One Remote Control: Thanks to the HDMI ARC (Audio Return Channel), you can connect the MC351 directly to your TV. This allows you to control the amplifier's volume using your existing TV remote, providing a streamlined user experience. Synchronized Power: The CEC function ensures that the amplifier powers on and off automatically with your television. Powerful 2.1 Channel Performance Robust Driving Power: Utilizing the high-efficiency TPA3255 core, the MC351 delivers 100W x2 (@4Ω) to your passive speakers, ensuring dynamic and detailed sound for both movies and music. Dedicated Subwoofer Output: Features a specialized subwoofer out to drive an active subwoofer, allowing you to build a true 2.1 surround experience with deep, impactful bass. Vintage Aesthetics & Modern Wireless Backlit VU Meter: The front panel is dominated by a classic, warm-lit VU meter that dances to the rhythm of your audio, adding a nostalgic charm to your living room. Bluetooth 5.3: Equipped with the latest Bluetooth 5.3, the MC351 provides a rock-solid wireless connection for high-quality streaming from your phone or tablet. 3. Technical Specifications Component Specification Amp Chip Texas Instruments TPA3255 Power Output 100W x2 @4Ω Input Options HDMI ARC, Bluetooth 5.3, RCA, Optical, Coaxial Output Options Passive Speakers, Active Subwoofer Out THD / SNR ≤ 0.03% / ≥ 100dB Tone Control Bass & Treble Knobs 4. Why the MC351 is the Smart Choice for Your Living Room The Fosi Audio MC351 is designed for those who find soundbars lacking in musicality and traditional receivers too bulky. It offers the simplicity of a soundbar with the audio performance of a Hi-Fi separates system. Its compact aluminum body and stunning VU meter make it as much a piece of furniture as it is a high-performance audio component.

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  Fosi Audio Fosi Audio BT30D Pro 2.1 Channel Bluetooth Amp

  9 reviews

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  Fosi Audio BT30D Pro 2.1 Channel Bluetooth Amp Feature High-Performance Amplifier• Connect Passive/Powered Speakers, Passive/Powered Subwoofers • Supports SUB frequency, SUB Volume, Master Volume/Bass/Treble Control• Replaceable Knobs: Orange Knob The Fosi Audio BT30D Pro is a versatileand compact stereo audio amplifierdesigned to elevate your listening experience for desktop setups, bookshelf speakers, and even smal home theater systems. lt combines multiple connectivity options with a robust poweoutput in a small, user-friendly package Key Features & Description:1.Powerful Dual-Mode Amplification:.TPA3255 Chipset: At its heart is the high-performance Texas Instruments TPA3255 Class-D amplifier chip, knowr for its excellent power efficiency and low distortion. This allows the BT30DPro to deliver a clean and dynamic sound.High Power Output: lt can deliver up to165W per channel at 4Q,or 120W perchannel at 8Q.This is substantial powerfor its size, capable of driving a widerange of bookshelf and floor-standin,speakers with authority.

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  Fosi Audio Fosi Audio TB10D

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  1. Pure Power for Your Home Audio The Fosi Audio TB10D is a high-performance Class D power amplifier designed to deliver massive energy in a compact footprint. As an upgraded version of its predecessors, it focuses on raw driving power and sonic clarity, making it an ideal choice for audiophiles who want to push their passive speakers to their full potential. 2. Key Features & Performance Audiophile-Grade TPA3255 Chip Incredible 600W Output: Equipped with the premium Texas Instruments TPA3255 amplifier chip, the TB10D delivers up to 300W x2 (@4Ω). It provides deep, controlled bass and crystal-clear highs, even at high volume levels. Ultra-Low Distortion: Maintains high efficiency while keeping Total Harmonic Distortion (THD ≤ 0.03%), ensuring that your music stays true to the original recording. Simple Yet Precise Control Tactile Tone Tuning: Features independent Bass and Treble knobs with a center-detent (middle position) for a flat response. This allows you to easily compensate for room acoustics or tailor the sound to your personal taste. Efficient Heat Dissipation: The solid aluminum alloy chassis acts as a natural heatsink, ensuring stable performance during long listening sessions. Universal Connectivity Plug-and-Play RCA Input: Standard RCA inputs make it compatible with DACs, CD players, streamers, or your computer's audio output. High-Quality Terminals: Gold-plated speaker binding posts ensure a secure connection for banana plugs or raw speaker wire. 3. Technical Specifications Component Specification Amp Chip Texas Instruments TPA3255 Power Output 300W x2 @4Ω Input Mode RCA Unbalanced Terminating Impedance 2Ω - 8Ω THD / SNR 0.03% / 110dB Frequency Range 20Hz - 20kHz (±3dB) Power Supply 32V/5A (Included) 4. Why Choose the TB10D? The Fosi Audio TB10D is the perfect solution for those who prioritize performance and value. It strips away unnecessary features like Bluetooth to focus entirely on amplification quality. If you already have a high-quality DAC or streamer and need a "workhorse" amp to drive your speakers, the TB10D is the most powerful option in its price bracket. Fosi Audio TB10D Fosi Audio V3 Amplifier Chip Amplifier Chip TPA3255 Amplifier Chip TPA3255 Tone Control Tone Control Dedicated Bass and Treble knobs Tone Control None (Pure bypass for sound integrity) Op-Amp Design Op-Amp Design Integrated (Non-replaceable) Op-Amp Design Replaceable (Supports Op-Amp rolling) Cooling Cooling Standard aluminum chassis Cooling Ventilated chassis with advanced thermal design Inputs Inputs RCA Inputs RCA Outputs Outputs Passive Speakers Outputs Passive Speakers + 3.5mm Pre-out Best For Best For Budget-conscious users who want to tune their sound Best For Audiophiles seeking pure sound and future upgrades Key Differences & Recommendation Choose the Fosi Audio TB10D if you want a simple, powerful "workhorse" amp. The physical tone controls are perfect if your speakers or room acoustics need a bit of adjustment (e.g., boosting the bass). It offers the best value for raw power. Choose the Fosi Audio V3 if you are an audiophile who wants the cleanest signal possible. It removes tone controls to prevent signal interference and features swappable Op-Amps, allowing you to customize the sound signature later. The Pre-out port also makes it easier to add an active subwoofer.

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