I owned the Parasound JC5 . I was powering Kef R900s
Preamp T1 tube with nos tubes . The JC5 was superior to A21 , Pass 150,Premaluna 300hp, Mcintosh 302. Then I had purchased a Coda continuum TS to compare against the JC5 . The outcome of the comparison between the two was that the Coda continuum TS was a far better controlled and musical presentation in all areas. Ten year warranty. If you call the company you will likely speak to the owner and designer directly.