Frank,

> am leaning towards a NAD recvr. i already have a couple of PSB loud speakers but really don't know where to go from here. do i need an amp? pre-amp? or both? <

If you get a receiver you don't need an amp or a preamp. Maybe a turntable preamp if you have a turntable and your receiver doesn't have a phono input. Otherwise, that's the whole point of a receiver! It's all in one, ready to connect to loudspeakers.

--Ethan