• Fosi Audio V3 Mono Power Amplifier
  • Fosi Audio V3 Mono Power Amplifier - view 2
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Fosi

Fosi Audio V3 Mono Power Amplifier

Fosi Audio V3 Mono Power Amplifier

  • Authorized Retailer
  • Free US Shipping
  • 1-Year Warranty
  • 45-Day Returns
$128.99 USD
$128.99 USD
Sale Sold out
Shipping calculated at checkout.
Title

The Fosi Audio V3 Mono is a compact Class-D power amplifier designed as a monoblock — one amp per channel — for desktop and small-room hi-fi speaker systems. Fosi has become a favorite in the budget hi-fi community for punching well above its price, and the V3 Mono brings the monoblock approach to an accessible $130.

It suits hi-fi hobbyists building a separates system on a budget: pair two V3 Monos with a preamp or DAC and passive speakers for a clean, space-saving setup.

  • Class-D mono power amplifier
  • Monoblock design — use a pair for true stereo separation
  • Compact footprint for desks and small rooms
  • Strong value entry into hi-fi separates

TonePier is an authorized Fosi Audio retailer with brand-new stock only. Free US shipping is included, and our 45-day return policy lets you audition the V3 Mono in your own system.

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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.