Fosi Audio 4.0 Channel Mini Amplifier BS-A1 Bluetooth 5.0 50W X4 HiFi Class D Amp USB Player for Home Speakers

Save $14.00

Sale price$75.99 Regular price$89.99


  • Fosi Audio BS-A1 Bluetooth stereo receiver amplifier support Bluetooth, RCA and USB input, compatible with your existing stereo equipment and provide exceptional sound quality.
  • Product Size: 5.12 inch X 1.38 inch X 5.12 inch. Simple compact design but practical and powerful. Stream Hi-Fi music to your home audio stereo system.
  • 4.0 CH Unique Design. With a select switch, this little amp can drive 2 passive speakers and 2 powered/active speakers at the same time in the RCA mode.
  • Small but Professional. Adopted Fosi Audio advanced BS-A1 power amplifier chip. RMS 50W X 4 output. THD: ≤ 0.01%. Frequency Range: 20Hz - 20kHz (±3 dB). SNR: ≥ 105 dB. Input sensitivity: ≤ 200mV.
  • What You Get: BS-A1 Amp, 24V/4.5A power adapter, AC cord, user manual, 18-Month global warranty, and 24-Hour quick customer service.


  1. Power supply range: DC 12v-24V;
  2. THD: ≤ 0.01%;
  3. Frequency Range: 20Hz - 20kHz (±3 dB);
  4. SNR: ≥ 105 dB;
  5. Input sensitivity: ≤ 200mV;
  6. Terminating impedance: 2Ohm - 8Ohm;
  7. Output power: 50W*4;
  8. Input: RCA/Bluetooth/USB;
  9. Power supply: 24V 4.5A;
  • 1*BS-A1 Amplifier
  • 1*AC cord
  • 1*24V 4.5A Power Supply
  • 1*User Manual

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