This is the cheap amp I bought. I hooked it up to the mid-range and tweeter portion of my broken Harmon Kardon Soundstik II powered speakers. I may try to find a better amp for the woofer.
This amp would cut out after 1/2 volume was reached but did what I wanted it to do, provide adequate sound with a 1st gen iPad as the source. The internal speakers of the iPad were difficult to hear.
I was using a lame looking power brick. It might do better hooked up to a 12V source that can provide more current.
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