All the speakers I am using I custom made using Scanspeak Relevator tweeters,Seas w22ex-001 8" midrange units and peerless 12" 803952 bass units.The pre-amp I made using Elliot sound project 88, which is a fine sounding pre-amp.When I first turned on and heard the amp I was very impressed with the clarity and 3D like effect of the vocals.At first I thought the bass was good, but was lacking a little, but after a good 6-7 hours of listening the amps really started to come through and everything was much better and the bass was superb, very tight and could be felt.I tried all sorts of music through the 6-7 hours listening from classical to prodigyand no matter what the CD's or volume I had no fatigue at all, I just wanted to keep on listening.I am very pleased with the amps from Anthony,and I will definitely be purchasing future...