Just received my new A21 today and I'm really diggin' it.
Its Big (60#), its Bad (400wpc) and Beautiful. It sounds even better. I'm running it with the preamp out's from my adcom.

All I can say is Transparency, Soundstage, Bass slam, Resolution, Detail and Clarity are fantastick. Oh yeah, did I mention transparency, soundstage and bass? Its also really quiet. It has great dampening.

Its worlds better than my adcom. It has really transformed my system and brought it to another level. I cant wait to hear it with Van Alstine's DAC and his hybrid preamp.

I'll post a follow up once its broken in and I've done more listening. Its only been playing for an hour now.