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Fosi Audio

Fosi Audio C3 USB Gaming DAC/Amp Sound Card

Fosi Audio C3 USB Gaming DAC/Amp Sound Card

  • Authorized Retailer
  • Free US Shipping $49+
  • 1-Year Warranty
  • 45-Day Returns
$145.99 USD
$145.99 USD
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Shipping calculated at checkout.
Title

The Fosi Audio C3 is an external USB gaming sound card built on an XMOS XU316 interface with a CS43131 DAC/amp chip driving headphones. That is a well-regarded pairing — the XU316 handles USB duties cleanly and the CS43131 is a staple of good dongles for a reason.

Aimed at gamers, but useful to anyone tired of noisy motherboard audio: it moves the conversion outside the PC chassis and away from the electrical mess in there. Small enough to travel with a laptop, and it works just as well for music as it does for footsteps.

  • XMOS XU316 USB interface
  • CS43131 DAC and headphone amp
  • External sound card for PC gaming and music

Authorized Fosi Audio stock, 1-year warranty, 45-day returns.

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Good to know

Frequently asked questions

Is this unit genuine?

Yes. TonePier is an authorized retailer — every unit comes from the brand or its official distributor, carries a valid serial number and is covered by the full manufacturer warranty.

How long does shipping take?

SKUs stocked in our US warehouse ship within 1–2 business days. Items shipped direct from our China hub typically arrive in 8–15 days with full tracking. The product page tells you which applies before you order.

What if it isn't for me?

You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.