I've just started back into the hobby after a 40 year hiatus. When life got in the way I was listening to home-built speakers with Hafler electronics (amp and preamp). I'm re-entering the hobby listening to the same amp and preamp but with updates by John Hillig of Musical Concepts (Hafler DH 110 preamp) and Ed at Qua-Co (DH 500) through KEF LS 50s and a pair of REL t7s. I've also added treatments to my listening room (GIK Acoustics). Hoping to expand my knowledge and listening enjoyment through the group.