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Small aluminium stereo amplifier with volume, bass and treble knobs

Fosi Audio BT10A Bluetooth 5.0 Stereo Amplifier 100W

SKU CH-G8W1-AWYSM

Compact Class D stereo amplifier delivers 100 W total power to passive speakers with Bluetooth 5.0 streaming up to 15 m and bass/treble controls

  • Measurements4.6 in × 3.7 in × 1.4 in
  • Package contents1
  • Product typeBT10A
  • Bluetooth 5.0 wireless streaming up to 15 metres for stable connections
  • 100 W total output drives most bookshelf and desktop speakers
  • Texas Instruments TPA3116 chip provides short-circuit, thermal, overvoltage and undervoltage protection
  • Bass and treble controls let you shape the sound to taste
  • Compact 4.6 x 3.7 x 1.4 inch aluminium chassis fits any desktop

Compact stereo amplifier for passive speakers

The Fosi Audio BT10A is a Class D integrated amplifier that delivers 100 watts total output across two channels. It is designed for listeners who want wireless streaming and wired input options for bookshelf or desktop speakers in a small footprint.

Upgrade from phone speakers or all-in-one systems

The jump is worth it when you already own passive speakers and need a dedicated amplifier with Bluetooth 5.0 streaming up to 50ft and a 3.5mm auxiliary input. It replaces the need for a separate receiver and adds bass and treble tone controls that many compact solutions omit.

Simple desktop installation

The unit ships with a 19 volt DC power adapter and power cord so it works out of the box. The aluminium chassis is freestanding and measures 4.6 by 3.7 by 1.4 inches. Built-in protection circuits guard against short circuits, thermal events, overvoltage, undervoltage and DC faults, reducing the risk of damage during setup or overload conditions.

How it compares

Measured against everything we stock in Stage & PA Amplifiers, at today’s prices. Recalculated every night.

Price $105.99
Pricier than about 68% of the 236 comparable items (median $30.49).

Specifications

Product
Brand nameFosi Audio
Product typeBT10A
Size & build
Measurements4.6 in × 3.7 in × 1.4 in
In the box
Package contents1

Questions about this item

How much desk space does the 4.6 x 3.7 x 1.4 inch chassis need?

The amplifier measures 4.6 inches wide, 3.7 inches deep and 1.4 inches high, so it fits on a small shelf or desktop with only a few inches of clearance for the rear speaker terminals and power jack.

Which input should I select first when pairing a phone over Bluetooth 5.0?

Power the unit on, wait for the Bluetooth indicator to flash, then choose "BT10A" on your phone; the amplifier remembers the last source, so subsequent power-ups reconnect automatically without pressing the input button again.

The 19 V DC supply runs warm — when should I replace it?

Replace the external 19 V power supply if the amplifier shuts down at moderate volume, the LED flickers, or the brick becomes too hot to touch, as the internal protection circuits will then cut output to prevent damage.

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