Fosi Audio DS1 Mobile DAC & AMP

The Fosi Audio DS1 is a compact USB DAC and headphone amplifier designed for portable high-resolution audio. With its optimized HiFi architecture, it delivers clean, detailed sound whether you're commuting, gaming, or using it at your desk.

Powered by the ESS ES9038Q2M DAC chip, the DS1 supports high-resolution formats up to PCM 32bit/768kHz and DSD512. This ensures accurate audio reproduction with low distortion and a wide dynamic range for immersive listening.

The DS1 features both 3.5mm single-ended and 4.4mm balanced headphone outputs, offering flexibility and strong output power to drive headphones from 16Ω to 300Ω. It provides clear, powerful performance even with more demanding headphones.

With plug-and-play USB-C connectivity, the DS1 works seamlessly with smartphones, tablets, laptops, and computers across multiple platforms. Its lightweight and durable metal construction make it ideal for everyday portable use.

Features
ESS ES9038Q2M DAC Chip
Supports PCM 32bit 768kHz And DSD512
3.5mm And 4.4mm Headphone Outputs
High Output Power Up To 220mW
Low Noise Floor And Low Distortion
Supports 16Ω To 300Ω Headphones
Plug And Play USB-C Connectivity
Compact And Portable Design

Compatibility
Android iOS Windows And Mac Devices
Smartphones Tablets And Laptops
Digital Audio Players
Headphones 16Ω To 300Ω

Specifications
Model: DS1
DAC Chipset: ES9038Q2M
Output Power: 120mW (3.5mm) 220mW (4.4mm)
Impedance: 16Ω - 300Ω
Input: USB Type-C
Output: 3.5mm And 4.4mm
Frequency Response: 20Hz-20kHz (±0.5dB)
THD: 0.0006% (SE) 0.001% (BAL)
SNR: ≥120dB
Sampling Rate: PCM 32bit/768kHz DSD512

Dimensions & Weight
Weight: 0.038 kg

In The Box
Fosi Audio DS1
Type-C To Type-C Cable
USB-A To USB-C Converter
User Manual