Tube Mono-Block Recommendation

Dragon_vibe, when you receive the MA-2, allow plenty of playing time for break-in before making any judgments. The capacitors in the amp are MASSIVE and require a minimum of 200 hours of playing time before you'll be able to assess the amp, and perhaps as much as 400 hours to fully come into their own. During this break-in period, the sound quality will change from listening session to listening session. This is typical of tube amps using the size and quality capacitors Ralph places in his amps, so not at all a unique issue. Just be prepared for it.

Yes I understand this. I would love to see the amps guts. Cant find pictures anywhere on the net.

Picture of Atma-Sphere MA-2 underside:
http://www.theaudiobeat.com/blog/pics/atmasphere_2.jpg

This image posted in an article by Marc Mickelson in The Audio Beat:
http://www.theaudiobeat.com/visits/tab_summer_audio_adventure.htm

Beautiful, Rushton if you don't mind me asking what speakers do you use for the Amps? How about Cables?

I drive Avalon Acoustic Eidolons with the MA-2s. Power cords for the amps are Silent Source Signature cables. Speaker cables are Omega Micro Planar V, but I'd use Silent Source Music Reference speaker cables today. These are the most neutral I've heard.