wireless Bluetooth Audio power amplifier 40Wout/Built in batte4000mAh/external

wireless Bluetooth Audio power amplifier 40Wout/Built in batte4000mAh/external

Model No.︰BL-4225B

Brand Name︰OEM

Country of Origin︰China

Unit Price︰-

Minimum Order︰1 pc

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Product Description

External loudspeaker

  • Bluetooth 4.2 Stereo Audio 2 Channel Amplifier 40W x 2 Mini Hi-Fi Class D Integrated Amp for Home Speakers (The Class D integrated chip has the characteristic of generating no heat energy)



  • Small simple compact design but practical and powerful, Hi-Fi Bluetooth amplifier exclusively designed for the customers who pursue HiFi sound;
  • Bluetooth 4.2 core, up to 50ft connection range guarantees low signal delay. No pop, no audible noise when Bluetooth connection is established;
  • 40W RMS X 2(4 ohms, 20 Hz - 20 kHz, 0.04% THD), comes with 16.8V power supply(Built in 4000 mAh large capacity lithium battery, working for 8 hours continuously.) can drive 25watts(8 ohm), 40watts(4 ohm) speakers, (For passive speakers only, not the powered speakers.)
  • Advanced circuitry design, built-in speakers protection circuit, best for bookshelf/computer/desktop/speakers in your home;
  • Home integrated digital amplifier and Outdoor travel party entertainment carry




  • Output power: 40W + 40W
  • Power supply: 16.8V 2A
  • Terminating impedance: 2Ohm - 8Ohm
  • Bluetooth transmission distance: No barrier distance50ft, Wall penetration distance 28ft.
  • Frequency Range: 20Hz - 20kHz (±1 dB)
  • SNR:  98dB
  • Input sensitivity:  280mV
  • Input mode: Bluetooth and Analog
  • THD:  0.5%
  • Interface Type : USB
  • Mode of operation : Button,( Mode button) press and hold for 3 seconds to switch working channel
  • Audio Crossover: Full-Range
  • Communication: AUX,USB,Audio Line
  • Output Power: 40W
  • Speaker Type: External connected speaker
  • Material: Aluminum alloy
  • Size:100*90*60mm
  • colour:silver white


       Package Contents:

     1 * Bluetooth audio amplifier

     1 * remote control

     1 * AC-DC Power adapter

     1 * Audio cable

Only the above package content, other products are not included.

Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

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