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Fosi Audio BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor, Outdoor, Garage, Ceiling, Bookshelf Speaker
Purchase options and add-ons
Item dimensions L x W x H | 13.2 x 9 x 3.6 Centimetres |
Manufacturer | Shenzhen Foresight Technology Co., Ltd. |
Mounting type | Surface Mount |
Brand | Fosi Audio |
Number of channels | 2 |
Output power | 200 Watts |
Package type | bare |
Material | Plastic |
About this item
- ENTRY-LEVEL POWER AMPLIFIER: Experience powerful sound with the BT20A Bluetooth amplifier, boasting an impressive 100Wx2 maximum output power. It can power multiple speaker cabinets, which can be used at home or in small venues
- EFFECTIVE, SIMPLE, AND NO FRILLS: The compact design allows it to be used in any space where passive speakers are required. It can be used in an office, a bedroom, a living room, a garage, or even on the patio
- EASY TO SET UP: The 2 Channel amplifier has a straightforward installation and a one-touch power switch for easy operation. The smooth bass and treble controls allow tuning to taste and the connected bookshelf speakers
- BLUETOOTH AND RCA INPUTS: The seamless Bluetooth connectivity allowing you to stream music directly from your phone without any dropouts or delays, delivering crystal-clear sound and impressive volume for your home audio setup
- ALL-BLACK DESIGN: This Class D amplifier features an integrated one-piece design that not only adds to its looks but also makes it more durable. With its stylish look, it fits wonderful on any shelf and complements most home decor
Product details
- Product Dimensions : 13.21 x 8.99 x 3.61 cm; 680.39 g
- Date First Available : Nov. 29 2024
- Manufacturer : Shenzhen Foresight Technology Co., Ltd.
- Place of Business : 3rd Floor, Building 10, Aohua Industrial Zone, Gaofeng Community, Dalang Street, Longhua District, Shenzhen 518000 China
- ASIN : B0DP95N7T1
- Item model number : BT20A
- Country of origin : China
- 鶹 Rank: #3,645 in Electronics (See Top 100 in Electronics)
- Customer Reviews:
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From the brand

Amplifying Your Voice, Shaping Our Innovation
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Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.
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Fosi Audio V3
TPA3255 Class D Home Audio Mini Speaker 2 Channel Amp 300 Watts x2
Product Description

Simple yet Powerful Mini Amp
Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.
- MAX Power Output: 100W x 2
- Terminating Impedance: 2 Ohm - 8 Ohm
- THD ≤ 0.04%, SNR ≥ 98dB
- Power Adapter: 24V/4.5A, DC Input Range: 12-24V
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With a Nice Consistent Resistance
Fine-tune your sound with the smooth bass and treble adjustment for optimal speaker performance.
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A No-Frills Amp
100 watt per channel power output can drive most home passive speakers to create astonishing sound.
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Bluetooth Amplifier for Speakers
Instant setup with phones, tablets, and almost any other Bluetooth-enabled devices.
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Crystal-Clear Hi-Fi Audio
Exceptional clarity at high volumes, with <0.04% distortion.
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Power the Pair of Indoor/ Outdoor Speakers
Paired with your audio device over Bluetooth or RCA cable, you will get a rich and clear sound.
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Advanced Circuitry Architecture
The Texas Instruments TPA3116D2 Chip presents music with rousing highs and deep lows.
More details about the BT20A amplifier for potential assistance:
- If you're seeking the upgraded version of the BT20A, please consider the BT20A Pro amplifier.
- The BT20A amplifier is designed for a 2.0-channel audio system and is not intended for a 4-channel system.
- Generally, it is not recommended to use a turntable with the BT20A amplifier unless your turntable is with a built-in phono preamp.
- In terms of accessories, a set of 24V/4.5A power cables and an instruction manual will be provided. Note: Remote control and extra cables are not included.
Comparison
![]() BT20A
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| ![]() BT10A
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| ![]() BT20A PRO
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| ![]() BT30D
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| ![]() BT30D PRO
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| |
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Customer Reviews
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4.5 out of 5 stars 16
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4.6 out of 5 stars 4
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4.4 out of 5 stars 22
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4.3 out of 5 stars 22
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4.5 out of 5 stars 16
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Type
| Bluetooth 2.0 CH Amp | Bluetooth 2.0 CH Amp | Bluetooth 2.0 CH Amp | Bluetooth 2.1 CH Amp | Bluetooth 2.1 CH Amp |
MAX Power Output
| 100W x 2 | 50W x 2 | 300W x 2 | 50W x 2+100W | 165×2+350 |
Input
| Bluetooth + RCA | Bluetooth + 3.5mm AUX | Bluetooth + RCA | Bluetooth + RCA | Bluetooth + RCA |
Output
| Passive Speakers | Passive Speakers | Passive Speakers+Pre-Out | Passive SPK+Active/Passive Sub | Passive/Active Speakers/Sub |
Treble & Bass Control
| ✔ | ✔ | ✔ | ✔ | ✔ |
THD
| ≤ 0.04% | ≤ 0.04% | ≤ 0.005% | ≤ 0.04% | ≤ 0.3% |
SNR
| ≥ 98dB | ≥ 98dB | ≥108 | ≥ 98dB | ≥ 108dB |
Terminating Impedance
| 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm |
Power Adapter
| 24V/4.5A | 19V/4.74A | 32V/5A | 24V/4.5A | 32V/5A |
Work Voltage
| AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V |