
I am using this mini amp with a 24v 5 amp power supply. 20 watts for the sub and 10 for the speakers. In no case does the sub-channel reproduce audible bass up to 30 Hz, as claimed by the manufacturer. The left and right channels are only reduced to 100-120 Hz. The sound quality is okay as long as it doesn't start to distort when you turn it on. You do not have to). If you're looking for a cheap 2.1 channel Bluetooth amplifier with a deck size digital display, this might be for you.

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