FOSI AUDIO – DS3 Portable DAC Chip Portable DAC/Amp with USB-C connector and dual headphone ports, ideal for high-resolution audio playback.
FOSI AUDIO – DS3 Portable DAC/Amp shown in black and silver variants, featuring compact design and gaming sound effects for immersive audio.
FOSI AUDIO – DS3 Portable DAC/Amp equipped with ESS ES9039Q2M chip, offering 32bit/768kHz PCM and DSD512 support for audiophile-grade clarity.
FOSI AUDIO – DS3 Portable DAC/Amp powered by next-gen XMOS processor, ensuring stable and lossless audio stream transmission for premium sound.
FOSI AUDIO – DS3 Portable DAC/Amp with spatial audio and FPS sound effects, enhancing gaming immersion using proprietary sound algorithms.
FOSI AUDIO – DS3 Portable DAC/Amp features a skylight design with tempered glass, showcasing internal components for a tech-inspired aesthetic.
FOSI AUDIO – DS3 Portable DAC/Amp crafted from CNC aluminum alloy, offering a refined, durable build with a premium finish for daily use.
FOSI AUDIO – DS3 Portable DAC/Amp includes volume memory function, automatically saving volume settings for a seamless listening experience.
FOSI AUDIO – DS3 Portable DAC/Amp connected to a smartphone with IEMs, demonstrating portable use and compatibility with mobile devices.
FOSI AUDIO – DS3 Portable DAC/Amp features 16-core XMOS flagship processor, delivering high-speed performance for advanced audio processing.
FOSI AUDIO – DS3 Portable DAC/Amp supports hardware-level EQ tuning with PEQ adjustment, allowing precise sound customization via web control.
FOSI AUDIO – DS3 Portable DAC/Amp package includes DAC unit, USB-C cable, USB-C to USB-A adapter, user manual, and quick guide for setup.
FOSI AUDIO – DS3 Portable DAC/Amp connected to smartphone, showcasing slim 11mm profile and 16g weight for easy portability and performance.
FOSI AUDIO – DS3 Portable DAC/Amp in silver finish with USB-C cable, offering dual headphone outputs and compact design for audiophile use.

Fosi Audio

FOSI AUDIO – DS3 Portable DAC Chip Portable DAC/Amp

Sale price₹ 9,999Regular price ₹ 15,999

    ESS ES9039Q2M flagship DAC chip

    XMOS XU316 USB interface with low latency

    3.5mm single-ended & 4.4mm balanced output

    Supports PCM 32bit/768kHz & Native DSD512

    Powerful output for 16–300Ω headphones

    Compact aluminum body, USB powered design

Color
Color: Black
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Pickup available at Naraina, New Delhi

You will be notified once the product is available for pickup, as per the pre-order timeline.

Description

The Fosi Audio DS3 is a portable USB DAC headphone amplifier designed for high-resolution audio performance and durable daily use. Built around the ESS Sabre ES9039Q2M DAC and XMOS XU316 USB interface, it supports PCM up to 32bit/768kHz and native DSD512 decoding for accurate digital-to-analog conversion with low noise and stable output. The device features both 3.5mm single-ended and 4.4mm balanced headphone outputs, delivering up to 220mW at 32Ω and supporting headphones from 16–300Ω. Its USB-C plug-and-play design ensures wide compatibility with smartphones, PCs, laptops, tablets, and gaming devices. The CNC-machined aluminum chassis includes a transparent skylight window inspired by watchmaking design, offering partial visibility of internal components while maintaining structural strength, effective heat dissipation, and long-term reliability for portable and desktop audio setups.

FLAGSHIP DAC & DECODING CORE

Fosi Audio DS3 portable USB DAC headphone amplifier is built around the ESS Sabre ES9039Q2M DAC combined with the XMOS XU316 USB interface, enabling accurate digital-to-analog conversion with low noise floor, high dynamic range, and stable signal processing. It supports high-resolution PCM up to 32bit/768kHz and native DSD512, making it suitable for audiophile-grade music playback across lossless and high-bitrate formats.

DUAL HEADPHONE OUTPUT ARCHITECTURE

Fosi Audio DS3 features both 3.5mm single-ended and 4.4mm balanced headphone outputs, allowing improved channel separation, reduced crosstalk, and lower distortion. The balanced output provides cleaner signal transmission for compatible headphones and IEMs, while the 3.5mm output ensures wide compatibility with standard earphones, making the device flexible for multiple listening setups.

OUTPUT POWER & IMPEDANCE SUPPORT

Designed to handle a wide range of headphones, the Fosi Audio DS3 delivers up to 220mW output power at 32Ω and supports headphones from 16Ω to 300Ω. This allows it to drive sensitive in-ear monitors as well as demanding over-ear headphones efficiently, maintaining controlled bass response, clean mids, and stable volume levels without audible distortion or clipping.

USB-C PLUG & PLAY CONNECTIVITY

The Fosi Audio DS3 is a USB-powered DAC amp with UAC 2.0 and UAC 1.0 support, ensuring driver-free operation with most smartphones, laptops, PCs, tablets, and gaming devices. The USB Type-C input provides stable power and data transfer without requiring an internal battery, making it suitable for portable use, desktop audio setups, and gaming audio enhancement.

LOW NOISE & CLEAN AUDIO PERFORMANCE

With a high signal-to-noise ratio and low THD+N design, the Fosi Audio DS3 maintains a quiet background and consistent audio clarity. This allows finer musical details to remain audible during critical listening sessions, gaming, or casual playback, ensuring stable performance across different source devices and headphone types.

PRECISION CONSTRUCTION WITH TRANSPARENT WINDOW

Fosi Audio DS3 features a precision-machined CNC aluminum chassis combined with a transparent skylight window design inspired by watchmaking aesthetics. The clear window allows partial visibility of internal components while maintaining structural integrity, effective shielding, and durability. The reinforced housing ensures protection against daily wear, improves heat dissipation, and delivers a premium build suitable for portable and desktop DAC amplifier use.

Specifications

Brand
Fosi Audio
Model
DS3
Product Type
Portable USB DAC & Headphone Amplifier
DAC Chip
ESS Sabre ES9039Q2M
USB Interface
XMOS XU316
Input & Power Supply
USB Type-C, USB Powered
Output Ports
3.5mm Single-Ended, 4.4mm Balanced
PCM Support
Up to 32bit / 768kHz
DSD Support
Native DSD512
Output Power
Up to 220mW @ 32Ω
Headphone Impedance
16–300Ω
Signal-to-Noise Ratio
≥120dB
THD + N
<0.0005%
Frequency Response
20Hz–48kHz
Body Material & Dimensions
CNC Aluminum Alloy · 55 × 20 × 11 mm

Box Content

    What will you get
  • 1x Fosi Audio DS3 Portable DAC Amp
  • 1x USB-C Charging Cable
  • 1x USB-C to USB-A Adapter
  • 1x Quick Guide
  • 1x User Manual

Warranty

1 YEAR WARRANTY

Don't worry, FOSI AUDIO – DS3 Portable DAC comes with a 1 Year warranty against manufacturing defects. We guarantee that every product on Concept Kart is genuine and backed by the Manufacturer's warranty.

Read more about Concept Kart's warranty policy.

Shipping Policy

FREE SHIPPING ON ALL PREPAID ORDERS

We usually ship orders on same day if ordered before 2 pm or within 24 hours if ordered later (except on holidays/sunday, where processing times may be higher) from one of our domestic warehouses based out of Delhi. It normally takes around 1 to 5 business days for delivery. We use premium service partners such as Blue dart, DTDC and Delivery for faster and reliable service. A tracking number will be provided upon shipment.

In very rare cases when order is not received after 10 business days of shipment (extended by number of days when the govt. Restricts movement of goods due to factors such as coronavirus pandemic), please contact us and we will provide you a support.