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I bought 2 of these and both work, but not very good at all. As soon as you attempt to raise the volume they go into protection mode and let off an annoying ring sound. You need to power off and then back on to turn it off. The Bluetooth seemed to work fine but the amplifier couldn't power a 5 watt 2" speaker enough to be louder than a whisper. Also, sound quality wasn't very good at low volume either. I was hopeful but would never re-order this. Use for a low wattage, low consumption speaker at 2.5 watts at best.
Verified purchase: Yes | Condition: New
When turned on, a very very loud voice of a Chinese woman speaking English announces that, and when blue tooth connected, the same loud voice appears again. A simple tone would suffice, I can't use the thing.
Verified purchase: Yes | Condition: New
if you are going to power it by at least 2A PSU it does SO-SO (half way decent) for battery powered application is however horrible the sound distorts to much and to EASY. then on day 4 of testing is just went dead power supply voltage 4.0 v li-ion batt. WHAT A SHAME!
Verified purchase: Yes | Condition: New
Verified purchase: Yes | Condition: New
It's really good . I 'll buy an other one soon
Verified purchase: Yes | Condition: New
