Fosi Audio / DS3 Black

The DS3 is a USB-C portable DAC/amp that is ideal for smartphones, PCs, and the Switch.

■ Audiophile-Grade DAC
・This USB-C dongle DAC/amp features the ES9039Q2M chip, supporting 32-bit/768kHz PCM and native DSD512. It achieves an SNR of over 122dB and THD of less than 0.0003%, delivering 220mW of power via the balanced output (32Ω). Balancing high performance with low power consumption, it is ideal for smartphones, PCs, and the Nintendo Switch.

■ XMOS-Powered Processor
・The DS3 is the world's first battery-free DAC/amp to integrate XMOS technology. Equipped with a dual-core 1.6GHz engine, it maximizes the performance of the ES9039Q2M DAC, ensuring stable, lossless audio streaming from source to decoder.

■ Spatial Audio Support
・Fosi’s proprietary built-in algorithm converts 7.1-channel game audio into 360° surround sound. Dedicated FPS effects allow for precise localization of footsteps, reloading sounds, and gunshots, aiding accurate positional awareness on PC, PS5, and Switch. No driver installation is required.

■ Dual HiFi/Gaming Modes
・Supports both UAC 1.0 and UAC 2.0 modes, with volume memory functionality for both. It offers detailed sound customization—without compromising audio quality—via eight digital filter options and an 8-band hardware-level PEQ adjustable through a web-based control panel.

■ Signature Design
・Constructed from CNC-machined aerospace-grade aluminum and featuring a tempered glass "skylight" that reveals the internal circuitry, the unit maintains a lightweight profile of just 16g.
■ Max Output: 220mW @ 32Ω
■ Sampling Rate: PCM 32-bit / 768kHz
■ Native Support: DSD512
■ Supported Headphone Impedance: 16–300Ω
■ Weight: 16g
■ Dimensions: 55 × 20 × 11mm

・DS3 DAC Headphone Amplifier
・USB-C to USB-C cable
・USB-C to USB-A adapter
・User manual