Elevate your daily listening experience with the Fosi Audio DS1. Built with an ESS Sabre ES9038Q2M DAC chip, dual 3.5mm single-ended and 4.4mm balanced outputs, and independent hardware volume control, this compact dongle delivers up to 220mW of driving power to easily power demanding in-ear monitors and full-size headphones.

Key Features

* Flagship ESS Sabre DAC Architecture
Featuring the high-performance ES9038Q2M DAC chip, the DS1 decodes PCM audio signals up to 32-bit/768kHz and native DSD512, providing high resolution, clear imaging, and low background noise floor.

* Dual 3.5mm Single-Ended and 4.4mm Balanced Outputs
Includes a standard 3.5mm single-ended jack alongside a true 4.4mm balanced output, delivering up to 220mW at 32 Ohms to drive headphones ranging from 16 Ohms to 300 Ohms.

* Independent Hardware Volume Control
Adjust audio levels with precision using dedicated physical volume buttons, allowing fine-grained control separate from your host device volume settings.

* Sturdy Metal Construction and Compact Design
Housed in a zinc alloy unibody casing weighing just 38 grams, the DS1 offers electromagnetic interference protection, efficient heat dissipation, and durable portability.

* Wide System Compatibility
Plug-and-play operation supports iOS, Android, Windows, and Mac systems without needing drivers, serving as a high-fidelity external sound card for smartphones, tablets, and laptops.

What is in the Box

* 1 x Fosi Audio DS1 USB DAC Headphone Amplifier
* 1 x USB-C to USB-C Data Cable
* 1 x USB-C to USB-A Adapter
* 1 x User Manual

Technical Specifications

* DAC Chipset: ESS Sabre ES9038Q2M
* Output Power: 120mW @ 32 Ohms (Single-Ended), 220mW @ 32 Ohms (Balanced)
* Recommended Headphone Impedance: 16 Ohms to 300 Ohms
* Max Sampling Rate: PCM up to 32-bit/768kHz, Native DSD up to DSD512
* Total Harmonic Distortion + Noise: 0.0006 percent (32 Ohms Single-Ended), 0.001 percent (32 Ohms Balanced)
* Signal-to-Noise Ratio: Greater than or equal to 120 dB
* Noise Floor: Less than 1.6 microvolts
* Frequency Response: 20Hz - 20kHz (±0.5 dB)
* Inputs: USB Type-C
* Outputs: 3.5mm Single-Ended Headphone Jack, 4.4mm Balanced Headphone Jack
* Housing Material: Zinc Alloy
* Weight: 38g