SMSL SA50: http://www.amazon.com/SMSL-50Wx2-TDA7492-Amplifier-Adapter/dp/B00F0H8TOC/ I gave one of these to my Dad to drive some old Utah speakers he has, and it works well. He mostly plays older, mellower stuff, 50-60s era with some Diana Krall, but it sounds good. It's has nice, smooth bass and c...