Fosi Audio DS2 Dongle DAC Headphone Amplifier

Fosi Audio DS2 Dongle DAC Headphone Amplifier

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Fosi Audio DS2 Portable Dongle DAC & Headphone Amplifier Bring your music to life wherever you go. The Fosi Audio... Read more

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    Description

    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 DS2
    Compact 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.

    Specifications

    • Weight: 200gr
    • Usage: Indoor & outdoor

    Pros and cons

    • Sustainably produced
    • Ideal for everyday use
    • May discolor in direct sunlight

    • Product details

      • Upgraded Version: A new generation USB-C portable headphone DAC and amplifier, supporting up to DSD256 and PCM 32bit/384kHz decoding for a high-resolution sound reproduction. It delivers a powerful drive of up to 170mw 32Ω each channel, effortlessly powering high or low-impedance headphones with 3.5mm single-ended or 4.4mm balanced connections, immersing you in the exquisite world of music.

      • Flagship Chips: Featuring two next-generation Cirrus Logic CS43131 DAC chips, the DS2 delivers superior system-level audio performance without draining your mobile source device's battery life. With its ultra-low 1μV noise floor, minimal 0.0001% THD, high 130dB SNR, and excellent 109dB SINAD, it enables you to enjoy pure sound.

      • Easy to Use: Connect it to your audio source and enjoy high-quality music without any complicated settings. The device features independent 60-step volume control buttons, providing you with a seamless, stepless volume adjustment experience and supporting volume memory function.

      • High Compatibility: Fully supports a wide range of mainstream audio source devices. Not only can it serve as a portable DAC and headphone amplifier for iPhone 15, 15 Plus, 15 Pro, iPad Pro, and Android phones, but it can also function as an external sound card for your computer, laptop or Mac, decoding high-quality music for you.

      • Exquisite and Durable: The DS2 is crafted from solid metal using CNC machining and shock-resistant. Its sleek design offers a smooth and comfortable grip, providing a refined tactile experience. In addition, Fosi Audio pledges to provide a 24-month worry-free warranty and responsive customer service to all users.

    Specifications

    Model
    DS2-2024
    Output Power
    128mW(SE); 170mW(BAL)
    Terminating Impedance
    16~300Ω
    Input Mode
    USB Type C
    Output Mode
    3.5MM + 4.4mm balanced output
    Frequency Range
    20Hz-20kHz (±0.5dB)
    THD
    ＜0.0002%
    SNR
    ≥130dB
    SINAD
    ＞109dB
    Noise Floor
    ＜1μV
    Sampling Rate
    PCM 32bit/384kHz, DSD256
    DAC Chip Set
    CS43131x2
    Compatible Devices
    iOS/Android/Mac/Windows
    Device Weight
    3.2 ounces

    What‘s in the box？

    Fosi Audio DS2 2024
    1
    Type-C to Type-C cable
    1
    USB-C to USB-A Converter
    1ns
    User Manual
    1
    Driver+Foobar installation
    /

    FAQs

    Please read our FAQs page to find out more.

    How to: Choose the right banana plug?
    • Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
    • Easy to wire up and solidly connect to amplifier and passive speaker.
    • If they do not fit, use a little force to tighten the plugs.
    • Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
    • Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
    Collapsible row
    • The following situations may cause this issue
    • Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
    • Possible solution
    • Check if the power supply is illuminated when plugged into AC by itself.

      Plug power supply into a different socket.

      Test the adapter with a meter.

      Try a different power supply (within a range of DC input).

      Test the included power supply on other electrical equipment.

      Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
    Collapsible row

    Using a more powerful power supply can help prevent distortion.
    Enables amplifier to drive larger, more powerful, or higher-impedance speakers.

    What is a GaN?
    • The GaN supply has a power output of 240W.
    • Offers overload and over-temperature protection.
    • The 48V 5A GaN power supply is also available on Amazon.

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