Fosi Audio BT20A Pro Mini Amplifier


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Bass & Treble Control with Midpoint Positioning

  • Passive Speakers + Pre-out
  • Bluetooth Pairing Cleared
  • 300 Watts x2 Power Output: Provided by the TI TPA3255 chip which features an advanced feedback design and proprietary high-speed gate driver error correction. In addition to excellent audio performance, TPA3255 achieves both high power efficiency and very low power stage idle losses below 2.5W.
  • High Efficiency: A significant upgrade from the BT20A amplifier. There’re two plug-ins NE5532 Op-Amps can be replaced by MUSES02, OPA2604AP, OPA2134PA Op-Amps etc. To create a different sound quality. SNR≥108dB; THD≤0.005%.
  • Upgraded Bluetooth 5.0 connectivity: By pressing and holding the volume control for five seconds, the Bluetooth pair can be cleared. In addition, it has a Bluetooth memory function, so it can be easily paired the next time. It also receives an alert tone.
  • Sound Control: With its unique design, the BT20A Pro amplifier for home audio has a wide range of bass and treble controls. Alternatively, you can turn the treble and bass effects to a middle point to listen to the original sound without effects.
  • What you Get: BT20A Pro Power Amplifier x1(The plug of the power adapter will match the country of your delivery address), Bluetooth Antenna x1, 32V 5A Power Adapter x1, AC Cord x1, User Manual x1, our worry-free 24-month warranty, and friendly customer service.
  • Tips: If you don’t require a Bluetooth amplifier as much, you can consider the TB10D. It has the same chip and power output, but at a more affordable price!


Specifications Details
Model BT20A PRO
Output Power 300Wx2 @4Ω
Terminating Impedance 2-8Ω
Input Mode Bluetooth + RCA
Output Mode Passive Speakers + Pre-out
Frequency Range 20Hz-20kHz(±1.2dB)
THD ≤0.005%
SNR ≥108dB
Chip Set TPA3255
Bluetooth Transmission Distance Up to 50Ft
Bluetooth Transmission Format SBC/AAC
Device Dimension 5x5x1 inches
DC Input Range 24-48V
Power Supply 32V 5A

What‘s in the box?

Item Quantity
BT20A Pro Power Amplifier x 1
Bluetooth Antenna x 1
32V 5A Power Adapter x 1
AC Cord x 1
User’s Manual x 1


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