Low voltage amplifiers?

[mrbigstuff]

There are a ton on eBay and Amz. But I don't know the differences. The various models are based on their chips, all class D amps. I'm using a small battery of 8v but may step up to a 9.6v pack. I'm building a cheap bluetooth boombox with parts I've got lying around. But I don't have a decent low voltage amp. The other thought is to scavenge a radio and use that board.