Fosi Audio DS3 Portable Dac Headphone Amp
Features
- Reconstruct multichannel 7.1 surround audio
- Create a spacious, lifelike soundstage
- Perfect pairing with IM4 Open-Back In-Ear Monitor
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Fosi Audio DS3 Portable Dac Headphone Amp
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
We offer free worldwide shipping, except for certain regions such as Ukraine and Russia, where our services are currently unavailable.
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
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FAQ’s
If you have any questions, please refer here: FAQs
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
Product details
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
FAQs
Please read our FAQs page to find out more.
What accessories are included with the DS3?
The box contains the DS3 dongle DAC/amp, a USB-C cable, a USB-C to USB-A adapter, a quick-start guide, and the user manual—everything you need for plug-and-play listening on phones, PCs, PS5 or Switch.
How do I switch gaming sound effects on the DS3?
In UAC 1.0 gaming mode, long-press both Volume+ and Volume- buttons to cycle through No Effect (yellow) / FPS Effect (blue) / 7.1 Spatial Audio Effect (purple); 7.1 creates a 360° immersive soundstage-no drivers needed.
Can I change digital filters on the DS3?
Yes—long-press both volume keys in UAC 2.0. Filters 1–7 blink once, Filter 8 blinks twice; pick the curve that best suits your headphones and music.
How do I change UAC modes on the DS3?
Plug in to default UAC 2.0 (red LED). Hold any volume key while reconnecting for UAC 1.0 (yellow). Swap back by unplugging and re-plugging the USB-C cable.
How do I toggle high/low gain on the DS3?
Short-press both volume keys together. In UAC 2.0, red flash = high gain, solid red = low. In UAC 1.0, watch the last color: flash = high, steady = low—yellow for no effect, blue for FPS, purple for 7.1.