Fosi Audio was founded with a simple goal: Build products that sound great and make people want to listen to music every day. We design, manufacture, and sell many Hi-Fi audio products on the market. We pursue your perfect music journey. Enjoy Hi-Fi music with Fosi Audio products.
Instant setup with phones, tablets, and almost any other Bluetooth-enabled device.
Exclusively designed for the customers who pursue HiFi sound.
100 watt per channel power output can drive most home passive speakers to create astonishing Sound.
Easy to fit your audio system with Bluetooth and RCA input.
Even at high volumes, there’s less than 0.04% harmonic distortion resulting in remarkable clarity.
The Texas Instruments TPA3116D2 Chip presents music with rousing highs and deep lows.
With a built-in power protection circuit, there are no sparks flying when you plug the power adapter into the amplifier. Safe for use!
Fosi Audio BT20A equip with an energy-efficient and stable power supply can get an astonishing sound.
![]() BT20A | ![]() BL20A | ![]() V3 | ![]() BT30D | ![]() BL20C | ![]() TB10D | ![]() ZA3 | |
Customer Reviews
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4.5 out of 5 stars
8,055
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4.4 out of 5 stars
577
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4.4 out of 5 stars
530
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4.5 out of 5 stars
2,462
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4.5 out of 5 stars
785
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4.5 out of 5 stars
858
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4.4 out of 5 stars
104
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Price
| $79.99$79.99 | $79.99$79.99 | $89.99$89.99 | $89.99$89.99 | $89.99$89.99 | $79.99$79.99 | $149.99$149.99 |
Type
| Bluetooth 2.0 CH Amp | Bluetooth 2.1 CH Amp | 2.0 CH Amp | Bluetooth 2.1 CH Amp | Bluetooth 2.1 CH Amp | 2.0 CH Amp | 2.0 CH Mono Amp |
MAX Power Output
| 100W x 2 | 100W x 2 | 300W x 2 | 50W x 2+100W | 160W x 2 | 300W x 2 | 190W x2/ 300W x1 |
Input
| Bluetooth + RCA | Bluetooth + 3.5mm AUX + U-disk | RCA | Bluetooth + RCA | Bluetooth + RCA + U-disk | RCA | RCA+XLR+¼”TRS |
Output
| Passive Speakers | Passive/Active Speaker+Sub/Amp | Passive Speakers+Pre-Out | Passive Speaker/Sub+Active Sub | Passive Speakers + Active Sub | Passive Speakers | Passive SPK +Sub-out |
Treble & Bass Control
| ✔ | ✔ | ✘ | ✔ | ✔ | ✔ | ✘ |
THD
| ≤ 0.04% | ≤ 0.001% | <0.003% | ≤ 0.04% | ≤ 0.05% | ≤ 0.3% | <0.006% |
SNR
| ≥ 98dB | ≥ 92dB | ≥110dB | ≥ 98dB | ≥ 98dB | ≥ 90dB | ≥106dB |
Terminating Impedance
| 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm |
Power Adapter
| 24V/4.5A | 24V/4.5A | 32V/5A | 24V/4.5A | 24V/4.5A | 32V/5A | 48V/5A |
Work Voltage
| AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V |