the first one I bought worked very well it sounds very clear and gets quite loud it has a woman on it which says Bluetooth is ready every time you turn it on, although I could do without that. The second doesn't work at all. As soon as you turn it on, it makes a hiss and the sound is distorted. The subwoofer channel is not powered. However, Revain refunded me for the product. All in all I would recommend them, they sound very good, have a nice thick record and seem very well made.
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