Need advice on low power amp

Try the LM3875

This amp on a chip can be used in both inverting and normal fashion. There is an entire board on devoted to single chip amps and the LM3875 seems to be the favorite. The only difficulty with the LM1875/3875 is that leads should be short. I think that it's a great little chip.

Linn uses a single chip amp (it's a TDA) in their Majik.