Fosi Audio BT20A Pro Bluetooth 5.0 Amplifier, 300W x2 Wireless Amp, TPA3255 2 Channel Mini Class D Integrated Home Audio Outdoor Stereo Receiver with Bass Treble Control for Passive Speakers

Price: ₹11,999 - ₹10,599.00
(as of Aug 04, 2026 12:20:41 UTC – Details)

Product Description

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-outAmp chip: TPA3255; MAX Output Power: 300Wx2@4ΩTHD: ≤ 0.03%; SNR: ≥108dB; Frequency Response rRange: 20Hz-20kHz(±1.2dB)Bluetooth Distance: ≥15m; Bluetooth Transmission Format: SBC/AAC

Bluetooth 5.0 Connectivity

Allowing you to connect your devices such as mobile phones and tablets from a greater distance.

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.

1 Bluetooth 5.0

2 Treble/Bass Control

3 PRE-OUT

1 Front Side

2 Back Side

3 Power Variability

Texas Instrument TPA3255 Chip

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

Upgrade Audio Performance

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

1 TPA3255 CHIP

2 Replaceable OP CHIP

3 High Power Inductors

Energy-efficient

The 2-channel amplifier uses a low standby power feature that reduces the power consumption when the amplifier is not in use, contributing to energy savings.

Stunning Bluetooth Design

Clear the Bluetooth pairing by holding the volume control for five seconds. Benefit from easy pairing with the memory function and an alert tone.

Comparison

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Customer Reviews

4.4 out of 5 stars 2,841

4.5 out of 5 stars 9,325

4.4 out of 5 stars 2,851

3.9 out of 5 stars 1,845

4.4 out of 5 stars 1,554

4.3 out of 5 stars 1,239

Price

₹10,599.00₹10,599.00

₹9,999.00₹9,999.00

—

₹11,599.00₹11,599.00

₹9,990.00₹9,990.00

₹9,949.00₹9,949.00

Type

Bluetooth 2.0 CH Amp

Bluetooth 2.0 CH Amp

Bluetooth 2.1 CH Amp

Bluetooth 2.1 CH Amp

2.0 CH Amp

2.0 CH Amp

MAX Power Output

300W x 2

100W x 2

50W x 2+100W

165W×2+350W

300W x 2

300W x 2

Input

Bluetooth + RCA

Bluetooth + RCA

Bluetooth + RCA

Bluetooth + RCA

RCA

RCA

Output

Passive SPK +Pre-out

Passive Speakers

Passive SPK+Active/Passive SUB

Passive SPK+Active/Passive SUB

Passive Speakers

Passive Speakers+Pre-Out

Treble & Bass Control

✓

✓

✓

✓

✓

x

THD

≤ 0.005%

≤ 0.04%

≤ 0.04%

≤ 0.03%

≤ 0.03%

<0.003%

SNR

≥108dB

≥ 98dB

≥ 98dB

≥ 85dB

≥ 90dB

≥110dB

Terminating Impedance

2-8 Ohm

2-8 Ohm

2-8 Ohm

2-8 Ohm

2-8 Ohm

2-8 Ohm

Power Adapter

32V/5A

24V/4.5A

24V/4.5A

32V/5A

32V/5A

32V/5A

Work Voltage

AC 110V – 240V

AC 110V – 240V

AC 110V – 240V

AC 110V – 240V

AC 110V – 240V

AC 110V – 240V

300 Watts x 2 Power Output: The TI TPA3255 chip amplifier has a feedback design and high-speed gate driver error connection for efficient and quality audio performance, with a low idle loss of <2.5W
High-Efficiency: The chip amplifier has replaceable Op-Amps for a custom approach when compared to the BT20A amplifier. Further, you can swap the 2 plug-in NE5532 Op-Amps for LME49720HA, MUSES02, OPA2604AP, OPA2134PA, LM4562, or NJM4556AD Op-Amps to achieve distinct sound qualities. It boasts an SNR≥108dB and THD≤0.005%
Bluetooth 5.0 Connectivity: The Bluetooth pair can be removed by pressing and holding the volume control for 5 seconds, and it also has a memory function for easy pairing and an alert tone for convenience
Custom Sound with Bass and Treble Controls: The BT20A Pro home audio amplifier has a sound control design so that you can experience sound without effects by setting treble and bass effects to the middle point
Package Contents: The package contains a BT20A Pro power amplifier, a Bluetooth antenna, a 32V/5A power adapter, an AC cord, and a user manual

Product summary

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