I thought the S-150 was 75 WPC.I had the S-200 which was 100 WPC.Very nice solid state amp,great sound,nice tingling highs and slamming bass nice vocals and mids.I now have the Class A SA-3 which is about 60 WPC in class A..I have an audiofile buddy who told me that Aragon is a nice amp.But I can tell you the THRESHOLD is no slouch.Has a nice sound that you wont get tired of and without the hassle of tubes.
