Fosi Audio BT20A Pro Bluetooth Stereo Power Amp
$79.99
Features
- The Best Bluetooth Audio Receivers of 2025
- Bass & Treble Control with Midpoint Positioning
- Op-Amp Rolling: SS3602, MUSES02, OPA2604AP, OPA2134PA
- Replaceable Knobs: ORANGE KNOB, GREY KNOB
Pairs well with
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Fosi Audio BT20A Pro Bluetooth Stereo Power Amp
Blue / No Power Supply
$79.99
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
We offer free worldwide shipping, except for certain regions such as Ukraine and Russia, where our services are currently unavailable.
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
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FAQ’s
If you have any questions, please refer here: FAQs
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)
Front Side
Back Side
Power Variability
Product details
Description
- 300 Watts x2 Power Output: Provided by the TI TPA3255 chip which features an advanced feedback design and proprietary high-speed gate driver error correction. In addition to excellent audio performance, TPA3255 achieves both high power efficiency and very low power stage idle losses below 2.5W.
- High Efficiency: A significant upgrade from the BT20A amplifier. There're two plug-ins NE5532 Op-Amps can be replaced by SS3602, MUSES02, OPA2134PA Op-Amps, etc. To create a different sound quality. SNR≥108dB; THD≤0.005%.
- Upgraded Bluetooth 5.0 connectivity: By pressing and holding the volume control for five seconds, the Bluetooth pair can be cleared. In addition, it has a Bluetooth memory function, so it can be easily paired the next time. It also receives an alert tone.
- Sound Control: With its unique design, the BT20A Pro amplifier for home audio has a wide range of bass and treble controls. Alternatively, you can turn the treble and bass effects to a middle point to listen to the original sound without effects.
- What you Get: BT20A Pro Power Amplifier x1(The plug of the power adapter will match the country of your delivery address), Bluetooth Antenna x1, 32V 5A Power Adapter x1, AC Cord x1, User Manual x1, our worry-free 24-month warranty, and friendly customer service.
- Tips: If you don't require a Bluetooth amplifier as much, you can consider the TB10D. It has the same chip and power output, but at a more affordable price!
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
What‘s in the box？
Which Product is right for you?
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Type
Bluetooth 2.0 Ch Amp
MAX Power Output
2x 300W@4Ω
Input
Bluetooth, RCA
Output
Speaker Output, Pre-Out
Treble & Bass Control
Yes
THD+N
≤ 0.005%
SNR
≥108dB
Terminating Impedance
2-8Ω
Amp Chip
TPA3255
Power Supply
32V/5A, 48V/5A
Type
Bluetooth 2.0 Ch Amp
MAX Power Output
100W x2
Input
Bluetooth + RCA
Output
Passive Speakers
Treble & Bass Control
Yes
THD+N
≤ 0.04%
SNR
≥98dB
Terminating Impedance
2-8Ω
Amp Chip
TPA3116 x2
Power Supply
24V/4.5A
Type
2.0 CH Amp
MAX Power Output
2x 300W@4Ω
Input
RCA
Output
Speaker Output, Pre-Out
Treble & Bass Control
No
THD+N
<0.003%
SNR
≥110dB
Terminating Impedance
2-8Ω
Amp Chip
TPA3255
Power Supply
32V/5A, 48V/5A
Type
Bluetooth 2.0 Ch Amp
MAX Power Output
2x 300W@4Ω
Input
Bluetooth, RCA
Output
Speaker Output, Pre-Out
Treble & Bass Control
Yes
THD+N
≤ 0.005%
SNR
≥108dB
Terminating Impedance
2-8Ω
Amp Chip
TPA3255
Power Supply
32V/5A, 48V/5A
Type
Bluetooth 2.0 Ch Amp
MAX Power Output
100W x2
Input
Bluetooth + RCA
Output
Passive Speakers
Treble & Bass Control
Yes
THD+N
≤ 0.04%
SNR
≥98dB
Terminating Impedance
2-8Ω
Amp Chip
TPA3116 x2
Power Supply
24V/4.5A
Type
2.0 CH Amp
MAX Power Output
2x 300W@4Ω
Input
RCA
Output
Speaker Output, Pre-Out
Treble & Bass Control
No
THD+N
<0.003%
SNR
≥110dB
Terminating Impedance
2-8Ω
Amp Chip
TPA3255
Power Supply
32V/5A, 48V/5A
