Summary: I needed a batter powered amp for an outdoor event. The sound quality is lacking, but if one is looking for a audiophile amp this should not be what you are searching. It runs all day, powering a couple horn speakers amplifying a mic, on a fully charged car battery (I do not know the amp-hours but not a super large one.).
Summary: Using it in a small meeting room and it is perfect for my application. I have read all the reviews and not everyone will be happy (EVER) but it works for me. If I expected more I would have got more than an 80 watt amp.