Fosi Audio Fosi Audio BT20A Pro Bluetooth Stereo Power Amp

• The Best Bluetooth Audio Receivers of 2026
  
• Bass & Treble Control with Midpoint Positioning
  
• Op-Amp Rolling: SS3602, MUSES02, OPA2604AP, OPA2134PA
  
• Replaceable Knobs: ORANGE KNOB, GREY KNOB

Fosi Audio BT20A Pro 600W TPA3255 Bluetooth 2.0 CH Amplifier

• Input: Bluetooth + RCA; Output: Passive Speakers + Pre-out
  
• Amp chip: TPA3255; MAX Output Power: 300Wx2@4Ω
  
• THD: ≤ 0.005%; SNR: ≥108dB; Frequency Response Range: 20Hz-20kHz(±1.2dB)

Texas Instrument TPA3255 Chip

Has a unique smart algorithm that optimizes the output stage for max efficiency and min distortion.

Distinct and Exceptional Sound Quality

The two plug-in NE5532 Op-Amps can be replaced by LME49720HA/ MUSES02/ OPA2134PA Op-Amps, etc.

High Precision and Stability Inductance Values

Low DC resistance and excellent frequency characteristics which improve performance

• 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 SS3602MUSES02OPA2134PA 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!

• BT20A PRO Power Amplifier x 1

• 32V/5A or48V/5A Power Adapter x 1

• Bluetooth Antenna x 1

• User’s Manual x 1