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

$79.99

+ Free shipping

Features

Bass & Treble Control with Midpoint Positioning

Bluetooth Pairing Cleared

Op-Amp Rolling: SS3602, MUSES02, OPA2134PA

Replaceable Knobs: Orange Knob

MODEL
Quantity

Free shipping 

Money-Back Guarantee

Customer support

24 Months Warranty

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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

Amplifier Comparison Table

BT20A PRO

HT4S

V3

Type

Bluetooth 2.0 CH Amp

Bluetooth 4.1 CH Amp

2.0 CH Amp

MAX Power Output

300W x 2

30w*4+60W*1

300W x 2

Input

Bluetooth + RCA

BT + 3.5mm AUX + OPT

RCA

Output

Passive SPK +Pre-out

Pre-Out+SPK Out

Passive SPK +Pre-out

Treble&Bass Control

THD

≤ 0.005%

≤ 0.03%

<0.003%

SNR

≥108dB

≥88dB

≥110dB

Learn More

  • 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 134 reviews
83%
(111)
12%
(16)
1%
(2)
1%
(1)
3%
(4)
B
B Campbell
Great bluetooth amplifier (with limitations)

The BT20A is a great 2 channel amp. Its very small. deceivingly powerful despite its size and the bluetooth receiver has plenty of range.
It is powerful enough to power 4, 8-ohm speakers, in parallel, with out distortion.

That being said I bought the 48v, 5 amp power supply. From what I understand you will only receive the full advertised output if you purchase the 48v 10A power supply which is more expensive than the BT 20A Pro amplifier. I didn't learn that fact until after i had placed my order.

The sound is great! I would like to power 6 speakers with it, I'm not sure it would handle the load.
I have used the optical fiber input from one TV, that worked well, and I have connected to it Via bluetooth from a different TV which also works very well.

What I don't like is, you can't connect a new bluetooth device without clearing out the first device. That's annoying because in order to connect the original device again you need to clear the amp from your device settings and re-pair it.
One last point you have to leave it in an accessible place so you can push the pairing button and adjust the volume.
A remote control would be a great addition.

J
J.B
Fosi BT20A Pro

Fantastic little amp ! I purchased it with the 48V power supply, definitely try get it with that instead of the 32V supply. Great connectivity and good power! I use it with Elac Debut 6 and this little amp does a great job driving them. Great too that it has Bluetooth connectivity! Highly recommended.

P
Paul Ljungqvist
Very impressive

It is a small amplifier, but with great sound. It easily drives my Dali Blue 5005.
Bought it with 48V option and GaN

W
William Lee
Nice Amp but underpowered

item is well built and works as advertised. The only item I am concerned with is output power into 8 ohms. I have 48v power supply and I still feel it is under powered. Not sure if that is enough power output. Surely not enough if you purchase 36 volt or less.

P
Philipp Weis
Geiles Teil

Hat echt Power das kleine Ding
Kein rauschen oder ähnliches
Guter Klang