very nice little amp, i needed a speaker test amp and this is perfect, i did not have time to measure it but it sounds very good, no hiss, no rumble, very quiet amp, with original power supply, but do not make a mistake, this little thing is big in sound, o yea big in power, and its a class D so it does not get hot, so i am very happy with my little amplifier, i did buy with the original power supply, a perfect set, do you need a small good amp, buy this, you will be happy , 5 stars for the seller
Very good amplifier for the money - it is even worth a lot more! There is some low level of buzz when work with included Power supply - but that supply is very cheap when you buy it in set with amplifier and it's not to be expected to be perfect! With some good Power supply there is no hum or buzz! My recommendation!