Fosi Audio BT20A PRO 300W x2 TPA3255 2 Channel Bluetooth 5.0 Power Amplifier

Regular price
$99.99 USD
Sale price
$99.99 USD
Regular price
$99.99 USD
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The upgraded version of Fosi Audio BT20A

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)

Bluetooth 5.0 Connectivity

Allowing you to connect your devices such as mobile phones and tablets from a greater distance, support to SBC/AAC.

Unique Design for Sound Control

Experience the authentic sound without any added effects by adjusting them to their middle points.

Full-range Pre-Out Output

Easily connect to a powered subwoofer, speaker, or another amplifier for versatile audio options.

Texas Instrument TPA3255 Chip

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

Achieve a 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

Front Side

Back Side

Power Variability

  • TI TPA3255 Chip Amplifier with 300 Watts x 2 Power Output: Advanced feedback design and high-speed gate driver error correction for efficient and high-quality audio performance, with low idle losses of <2.5W.

  • Upgraded High-Efficiency: A significant upgrade from the BT20A amplifier with replaceable Op-Amps for customized. You can replace the two plug-in NE5532 Op-Amps with MUSES02/OPA2604AP/SS3602 Amps to achieve a unique sound quality. With SNR≥108dB and THD≤0.005%.

  • Enhanced Bluetooth 5.0 Connectivity: The Bluetooth pair can be cleared by pressing and holding the volume control for five seconds. In addition, it has a memory Function for Easy Pairing and Alert Tone.

  • Customizable Sound with a Wide Range of Bass and Treble Controls: The BT20A Pro home audio amplifier offers a unique design for sound control. Enjoy original sound without effects by setting treble and bass effects to the middle point.

  • What you Get: BT20A Pro Power Amplifier x1, Bluetooth Antenna x1, 32V 5A Power Adapter x1, AC Cord x1, User Manual x1, our worry-free 24-month warranty, and friendly customer service.
  • 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 or 48V 5A
  • BT20A PRO Power Amplifier x 1

  • Bluetooth Antenna x 1

Customer Reviews

Based on 66 reviews
Bill Moore
Fozi bt-20a pro

Volume knob is loose right out of the box, after a few songs it cuts power output by half roughly, I have tried my Pioneer receiver when it does this to make sure it's not a wiring issue and not the Fozi amp, it makes no difference if wired with RCA cords or Bluetooth, I like the compact size and weight of the Fozi but it's performance after 3/4 songs is poor, it's not getting real hot or anything weird, i tried a fan and makes no difference, I run the amp with a eq and Cerwin Vega at-8 speakers, it makes good music at half volume for a few songs and before you know it, it's turned up all the way and only puts out about half the power. I checked power supply and that's working fine, I won't beat your products up on line, that does no good and Fozi treated me good, I really appreciate the 20% discount and like the amp, just want a amp that can play loud for a couple hours. Thank you Fozi Audio!!

Bob Radosavljevic
Nice little amp for the money

I am using this amp in my garage with Infinity IL10 bookshelf speakers with the blue tooth connection and have about 100 hours on it. The sound is super clean, a little on the bright side I would say. The tone controls are an excellent feature. What can I say its definitely a keeper and its staying in my garage. It would also be great to use for a mini stereo or computer set up. I don't know if its actually 300 watts worth of sound cause my speakers are only 8ohms. You would need lower impedance speakers to get the full power from the amp.
Also I ordered the upgraded power supply.

Happy Fosi owner
Fosi Audio BT20A Pro

Incredible sounding Powerful little amplifier I would highly recommend it

Nicolas Valdivia

Fosi Audio BT20A PRO 300W x2 TPA3255 2 Channel Bluetooth 5.0 Power Amplifier

Jacob Claassens
Great amp, powering AR48LS

Great sound, efficient, well built. Great product at great price.

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