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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Limited time 15% discount
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 69 reviews
Fosi Audio BT20A Pro

I use a 48v power supply and Polk Audio Signature S15, the sound quality is actually much better than expected and it is very successful in high resolution audio files via wireless connection, thank you Fosi family.

Sandeep Kumar
Good but not for audiophile

Powerful and good . But sound quality is not too good


Using the 48v power supply with the SparkoS Labs Op Chips. Surprisingly good audio definition and sound stage. Clean output. Definitely recommend!

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.

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