I have the CAP150 and agree with Kipp. The Classe is a neutral to slightly warm amp if that helps. Unfortunately, I have not heard the Plinius integrated amps though Plinius typically gets great reviews. The important thing is what other components (including cables) you have in your system and what sound you prefer (warm, neutral, bright). You should also audition, preferably in your home, before you buy. Hope this helps.
