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Fosi Audio

Fosi Audio BT20A Pro Bluetooth Power Amplifier

Fosi Audio BT20A Pro Bluetooth Power Amplifier

  • Authorized Retailer
  • Free US Shipping $49+
  • 1-Year Warranty
  • 45-Day Returns
$92.99 USD
$92.99 USD
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The Fosi Audio BT20A Pro is a mini Class D stereo power amplifier built on the TPA3255 chip, with Bluetooth input, 300W x2 output, and bass and treble controls.

A staple for desktop and bookshelf speaker setups where a full-size integrated amp makes no sense. Bluetooth in means a phone can drive it directly, and the tone controls let you tame a bright pair of speakers or a reflective desk without adding EQ software to the chain.

  • TPA3255 Class D amplifier, 300W x2
  • Bluetooth input, bass and treble controls
  • Authorized retailer, 1-year warranty
  • Free US shipping over $49, 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.