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Fosi Audio BT20A Pro Bluetooth Stereo Hi-Fi Amplifier 300W x 2

Fosi AudioPart # 235-252
Model: BT20A Pro-48V

The Fosi Audio BT20A PRO is a premium Bluetooth amplifier designed to deliver exceptional sound quality. The sleek and robust build ensures both aesthetic appeal and durability, making it a standout addition to any home audio system. Perfect for audiophiles and casual listeners alike, this amplifier combines cutting-edge technology with user-friendly functionality for an unparalleled audio experience. 48V 5A Power Supply included.

Key Features

  • Bluetooth 5.0 connectivity for seamless wireless streaming
  • Low-profile build to fit anywhere you need it
  • Low DC resistance and excellent frequency response for improved performance
  • Volume-controlled pre-out for integrating active subwoofers or additional amplifiers
  • Replaceable NE5532 Op-Amps give this amp a unique sound quality and high efficiency
  • 48V 5A Power supply included
  • Treble and Bass control to adapt the sound to your room and your tastes
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See all items in Home Audio Amplifiers
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Overview

Fosi Audio BT20A Pro Bluetooth Stereo Hi-Fi Amplifier 300W x 2

Fosi Audio BT20A Pro 600W TPA3255 Bluetooth 2.0 CH Amplifier

The upgraded version of the BT20A

  • 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

Enables long-range wireless connectivity with devices like mobile phones and tablets, supporting SBC and AAC codecs.

Unique Design for Sound Control

Enjoy pure, unaltered sound by setting tone controls to their center positions for a neutral listening experience.

Full-range Pre-Out Output

Easily connect to a powered subwoofer, speaker, or additional amplifier, offering flexible system configuration options.

Texas Instruments TPA3255 Chip

Uses a unique smart algorithm to optimize the output stage for maximum efficiency and minimal 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 response for improved performance

Front Side

Back Side

Power Variability

Features

TI TPA3255 Chip Amplifier with 300W x 2 Power Output
Features advanced feedback architecture and high-speed gate driver error correction for efficient, high-fidelity sound with idle power consumption under 2.5W.

Upgraded High Efficiency
A major enhancement over the BT20A, the BT20A Pro includes replaceable NE5532 Op-Amps, allowing customization with MUSES02, OPA2604AP, SS3602, and others. Delivers SNR ≥108dB and THD ≤0.005%.

Enhanced Bluetooth 5.0 Connectivity
Clear Bluetooth pairing by holding the volume knob for five seconds. Includes memory pairing and an alert tone for easy use.

Customizable Sound with Broad Tone Control
Tailor your sound with wide-range bass and treble adjustments. For pure, uncolored audio, set tone controls to the center position.

Specifications

  • 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

Which Amp is Right for You?

BT20A

BT20A Pro

BT20A MAX


BT20ABT20A ProBT20A MAX
Release Date202020232025
Channels2.02.02.0 / 2.1
Bluetooth ChipATS2853
ATS2853
Qualcomm QCC3095
Amplifier ChipTI TPA3116, NE5532
TI TPA3225, NE5532
TI TPA3225, NE5532
Max Output Power100W × 2
300W × 2 @ 4Ω
300W × 2 @ 4Ω
InputsRCA, BT
RCA, BT
RCA1, RCA2, BT
OutputsSpeaker Out
Speaker Out
SUB Out, Speaker Out
SNR≥ 98dB
≥ 108dB
≥ 112dB
THD+N≤ 0.5%
< 0.005%
≤ 0.003%
Input SwitchAuto Switch
Auto Switch
Dedicated Switch Button
Bass & Treble ControlSupported
Supported
Supported
Bluetooth5.0: SBC, AAC
5.0: SBC, AAC
6.0: SBC, AAC, aptX, aptX HD,aptX
Adaptive, aptX Lossless, LDAC
Other Features--
--
Remote Control, PFFB Technology,
Bypass, High-Pass Filter, 12V Trigger,
Motorized Potentiometer

Product Details

BrandFosi Audio
ModelBT20A Pro-48V
Part Number235-252
Unit of MeasureEach
Weight2.53

Product Specifications

Power (RMS/Channel 8 ohms)101 - 250 Watts
Weight Range< 10 lbs.
Special FeaturesBluetooth / Wireless

Specifications

Q&A

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