Hey grk,
You did not highjack the thread, just sharing information about other's opinions/experiences with D amplifiers. Yes, indeed Dr. Bump raved about the pair of AGD amps he had in for review. Yet, I have listened to AGD's Vivace MKII amps and at best thought they were competent, nothing special or extraordinary to my ears. Of course this boils down to personal taste and system matching. No right or wrong answer. However, I know at least three buyers of AGD amplifiers who regretted selling off their Class A amplifiers and did not get connected to the music with the D amplifier. Obviously, the Dr. Bump had a very different experience compared to his VAC amplifier.
Teajay