I hooked up my new PS Audio P15 Power Plant with no complications. After a half hour, I listened to some music. To my total surprise and amazement, the bass seemed tighter and more robust. It's timbre relative to other sounds created a fuller, slightly more complete palette of sounds. I did not expect such an immediate and apparent change. fyi, flac hi rez files into Pass Labs XP20 into Pass Labs XA100.5 monos into Consensus Audio Engineering Conspiracy speakers. So far I'm very happy with the P15.