Fosi Audio V3
- 3 reviews
- Fosi Audio
Description
Fosi Audio V3: High-Power TI TPA3255 Stereo Class D Amplifier
The Fosi Audio V3 redefines the capabilities of a compact desktop amplifier. Utilizing the cutting-edge Texas Instruments TPA3255 Class D chip, the V3 delivers immense power, exceptional efficiency, and pristine audio quality, making it the perfect choice for driving demanding passive speakers in a desktop, bookshelf, or small room setup.
Flagship Chipset for Immense Power
The V3 is engineered around a powerful architecture to achieve clean, high-wattage output.
TI TPA3255 High-Fidelity Chip
The V3 employs the renowned Texas Instruments TPA3255 high-efficiency Class D amplifier chip. This core component enables the V3 to deliver substantial power while maintaining extremely low distortion across its operational range.
Massive Output Capability
With the capability to deliver up to 300 Watts of power per channel into a 4Ω load (when using a strong power supply), the Fosi Audio V3 can effortlessly drive large, low-sensitivity, or power-hungry passive speakers with excellent dynamic control and punch.
Customization and High-End Design
The V3 offers features typically found on more expensive audiophile equipment, allowing users to tailor the sound.
Interchangeable Op-Amps (Rolling)
A standout feature is the ability to easily swap or "roll" the operational amplifiers (Op-Amps). This allows enthusiasts to experiment with different Op-Amp chips to subtly adjust the amplifier's sonic signature and match their personal listening preferences.
High-Quality Components
The V3 is built with premium components, including Wurth inductors, Nichicon capacitors, and WIMA film capacitors, ensuring long-term reliability and contributing to its excellent sound reproduction quality.
Simple and Robust Integration
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Compact Form Factor: The V3 maintains an incredibly small footprint, allowing it to integrate seamlessly onto a crowded desk or bookshelf without sacrificing performance.
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Volume and Tone Controls: Features a smooth, tactile volume control knob on the front panel for easy manual adjustment.
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Simple Analog Input: The amplifier provides a standard RCA analog input, allowing easy connection to any external DAC, preamp, or audio source.
Specifications
- Weight: 200gr
- Usage: Indoor & outdoor
Pros and cons
- Sustainably produced
- Ideal for everyday use
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The Next-Gen Monoblock
Fosi Audio V3 Mono Mini Power Amplifier
A debut Class D audio amplifier with PFFB technology to significantly improve sound purity
and system efficiency, offering a flexible solution to your home audio system.
Continuation of Co-Creation
Engineered for Audiophiles - Optimal Choice for Home Audio Systems
We listen intently, record diligently, and develop with dedication, ultimately striving to transform your suggestions and ideas into reality—the V3 mono.
- Input: RCA, XLR, ¼" TRS; Output: Passive Speaker (supports banana plug or bare wire connection)、Passive subwoofer.
- SINAD: XLR--101dB; RCA--93dB; SNR: ≥123dB
- Rated Power Output: 48V/5A 240W@4Ω; 32V/5A 100W@4Ω;Maximum Power Output: 300W@4Ω (48V 10A power supply required).
Post-Filter Feedback Technology Integrated
Significantly reduces distortion, enhances linearity and frequency response to get superior sound.
Compact Yet Powerful
Crafts an immersive sound experience, satisfying your craving
for superior musical quality.
Accurate Imaging
with Zero Crosstalk
Enhances stereo depth and soundstage accuracy
for a purer audio experience.
Easily Replaceable DIP8
Dual Discrete Op-amps
Meeting your pursuit of a personalized audio experience
Provides You with Flexible
Connectivity Options
Effortlessly switched by a toggle switch, easily adapted
for both home and professional scenarios.
Advanced Cooling Design
Long-term efficient operation of the amp, prevents overheating.
With Minimalist Design
Effortlessly integrates into various settings like home theater,
study room, desktop, and studios.
Automatic Signal Sensing
Enters standby after 10 minutes
of no signal input, effectively reducing power consumption.
Premium Internal Components
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NICHICON Caps, Japanese
Ensure superior sound clarity, longevity, and stable electrical performance, enhancing the fidelity of audio reproduction.
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WIMA Caps, German
Provide exceptional sound quality and signal stability, greatly enhancing the audio experience.
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ELNA Caps, Japan
Ensure enhanced audio clarity and stability, contributing to a richer sound experience.
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Sumida Inductor, Japanese
Offers superior signal purity and noise reduction, elevating the amplifier's sound performance.
Product detailas
Description
- Mini Monoblock Amplifier: Crafted for HiFi audiophiles, the V3 Mono allows you to drive a single passive speaker with one amp, delivering up to 240W @4Ω of rated power. It offers the flexibility to build your home audio 2/3/4/5-channel system effortlessly. The V3 Mono can serve as a power amplifier for multi-channel AVRs, complementing the output power to easily drive high-power speakers in home theater systems.
- Innovative Cutting-Edge Technology: Fosi Audio has achieved a technological breakthrough through independent research and development by applying PFFB (Post-Filter Feedback) technology to the V3 Mono for the first time. This effectively overcomes the common load dependency issues of Class-D amplifiers, improving distortion and enhancing frequency response, thereby significantly enhancing sound quality and performance.
- Audiophile-Grade Components: The V3 Mono incorporates the high-end TPA3255 Class-D amp chip, paired with well-known components such as Japanese Nichicon filter capacitors, ELNA capacitors, German WIMA capacitors, and Japanese Sumida inductors, etc. Additionally, it features an upgraded four-layer PCB. This combination not only ensures high power output but also achieves a THD as low as 0.006%, a SINAD of 101dB, and an SNR of 123dB. As a result, the fidelity and quality of the audio are assured.
- Advanced Cooling: Utilizing Fosi Audio's pioneering full-body heat dissipation design, the TPA3255 amplifier chip is placed at the bottom and tightly integrated with the chassis, allowing heat to be effectively dissipated through the casing. Coupled with dual side ventilation holes that enhance internal airflow, this ensures the V3 Mono can deliver stable, high-power output over extended periods.
- User-Friendly Design: Supports both XLR/¼" TRS balanced and RCA single-ended(with gain selection) inputs, with an easy toggle switch for selection. Additionally, it features an auto power/signal sensing mode to enhance energy efficiency. You can also customize your preferred sound signature by replacing the stock NE5532 op-amps, supporting DIP8 dual discrete op-amps such as Sparkos SS3602, MUSES02, OPA2604, Burson V5i, V6, V7, and more.
- V3 mono stereo audio component mini power monoblock amplifier 2 channel amplifier single channel 2/2.1/3/4/5 channel class d amp tpa3255 for home theater desktop outdoor bookshelf Tower floorstanding passive speakers ZA3.
Specifications
- Channel : 1.0
- Amplifier Chip : Texas Instruments TPA3255
- Input : RCA, XLR, ¼" TRS
- Output : Speaker Output (supports banana plug or bare wire connection)
- SINAD : XLR: 101dB ; RCA: 93dB
- SNR : ≥123dB
- Dynamic Range : ≥123dB
- THD : ＜0.006%
- Gain : XLR/¼” TRS: 20dB ; RCA: 19dB, 25dB;
- Terminal Impedance : 2-8Ω
- Rated Power Output : 48V/5A--240W@4Ω ; 32V/5A --100W@4Ω
- Frequency Response : 10Hz-30kHz（±0.06dB）
- Input Voltage Range : DC 32-48V
- Standard PSU : 48V/5A
What‘s in the box？
- V3 MONO Power Amplifier
- 48V/5A or 48V/10A Power Adapter
- User’s Manual x 1
Which Product is right for you?
Compare products to find the best one for your needs.
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Fosi Audio V3 Mono Monoblock Power Amplifier
Type:Monoblock
Amp Chip:TPA3255
MAX Power Output:300W@4Ω
Input:RCA, XLR, ¼”TRS
Output:Speaker Output
Treble & Bass Control:No
THD+N:<0.006%
SNR:≥123dB
Terminating Impedance:2-8Ω
Power Supply:32V/5A, 48V/5A
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Fosi Audio ZA3 Balanced Stereo Amplifier
Type:2.0 CH
AmpAmp Chip:TPA3255
MAX Power Output:2x 300W@4Ω
Input:RCA, XLR, ¼”TRS
Output:Speaker Output, Sub-Out
Treble & Bass Control:No
THD+N:<0.006%
SNR:≥106dB
Terminating Impedance:2-8Ω
Power Supply:32V/5A, 48V/5A
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Fosi Audio V3 Mini Stereo Amplifier
Type:2.0 CH Amp
Amp Chip:TPA3255
MAX Power Output:2x 300W@4Ω
Input:RCAOutputPassive Speakers, Pre-Out
Treble & Bass Control:No
THD+N:<0.003%
SNR:≥110dB
Terminating Impedance:2-8ΩPower Supply32V/5A, 48V/5A
FAQs
The V3 Mono has three op-amps. What does each one do? And if l want to get a better sound, which one should l change?
The three op-amps in the V3 Mono serve distinct functions: Position 1 converts the RCA unbalanced signal to a balanced signal, while positions 2 and 3 adjust the tone. lf you're considering replacing an op-amp, it's recommended to start with the one in position 2. Replacing both the op-amps in positions 2 and 3 will have a more noticeable effect. Users can try swapping different op-amps to experience changes in sound quality.
For the V3 Mono do I need any specific type of op-amp?
It supports DIP8 dual op-amps. We highly recommend the op-amp available through the following link: https://fosiaudio.com/products/op-amp-chip-muses02-opa2604ap-opa2134pa?_pos=20&_sid=71ca24042&_ss=r
Using different op-amps can result in various sound signatures. Please refer to the video via the link: https://youtu.be/jtK9oYZ_XoI
The V3 MONO's power LED does not work but it outputs sound.
Check if the LED is out of position after swapping the op-amp. Open the unit and align the LED correctly.
Friendly Solutions Guide
1. Function Troubleshooting
- Ensure all wiring is correct (connect the positive speaker wire to the amplifier’s positive terminal, the negative to the negative terminal, and make sure the speaker wires do not touch each other, as this could cause a short circuit and potentially damage the amplifier). ---In AUTO mode, if no signal is detected for 10 minutes, the V3 MONO will automatically enter standby mode to save energy, and will reactivate upon detecting a signal, combining convenience with energy efficiency. Ensure a stable signal connection.
2. Heat Dissipation
- It is recommended to use V3 MONO within the rated power range to avoid overheating. (Rated Power 240W, Maximum Power 300W) --- Place V3 MONO in a cool and ventilated working environment.
- Use a cooling fan with V3 MONO to achieve effective heat dissipation. It can attach an aluminum heat sink to the top with a thermo-transferring adhesive.
3. Audio Sound Quality:
- Audio Quality: Different audio source qualities affect the sound quality. It is recommended to use high-quality, lossless audio files, such as FLAC, WAV and other formats, to obtain a better sound quality experience. V3 MONO supports impedance of 4-8Ω. Speaker impedance that is too low or too high will cause unstable amplifier output and affect the sound quality performance.--- Please replace with a high-quality RCA cable with good shielding to prevent noise.
- Sound Volume: The V3 Mono is a pure power amplifier with no volume control or knobs. It has a gain of 19 dB / 25 dB for RCA inputs and a fixed gain of 20 dB for XLR inputs. It can be adjusted to above 19dB to increase the volume and output power.
4. Compatibility:
- NOT Compatible: Active Subwoofer, Bass Shaker, Bass Audio,Bluetooth, USB/COA/OPT decoding amplifier, and does not support headphone amplifiers.--- Suggest Burson V7 Vivid opamps with soft extension cable.