Features
Reconstruct multichannel 7.1 surround audio
Create a spacious, lifelike soundstage
Perfect pairing with IM4 Open-Back In-Ear Monitor
Hardware-level 7.1 Spatial Audio
Fosi's in-house spatial audio algorithm supports native 7.1-channel audio input and reconstructs the sound space to convert multichannel game audio into an expansive 2-channel 7.1 surround, crafting a 360° immersive audio experience.
MAX Output Power:220mW@32Ω
Sampling Rates:PCM 32bit/768kHz
Support Native:DSD512
Headphone Impedance: 16-300 ohms
Weight: 16g; Dimensions: 55x20x11mm
Description
No PC software or drivers needed. Fosi's in-house spatial audio algorithm supports native 7.1-channel audio input and reconstructs the sound space to convert multichannel game audio into an expansive 2-channel 7.1 surround, crafting a 360° immersive audio experience.
Even with standard stereo sources, it instantly creates a spacious, lifelike soundstage.
In games with multichannel audio output — such as Delta Force: Hawk Ops and Forza Horizon 5 — enabling 7.1 surround sound delivers precise directional awareness and realistic distance perception, bringing the roar of engines and the intensity of battlefields vividly to life.
What‘s in the box?
Fosi Audio DS3
User Manual
USB-C Cable
USB-C to USB-A Adapter
Quick Guide

