Herron VTPH-2A, Herron VTSP-360 and Herron M2

I've had the VTSP-3A (r03) for about two years now if memory serves correct. I was curious about the microZotl pre... it could not compete. Even with NOS RCA from Andy.....

If I choose to get a new linestage. It will be the next iteration from Herron. 
 

My only gripe. It looks like a cable box with no ability to completely turn off all led's.... other than that no complaints.  I asked Keith about the possibility of a kill switch to completely black out while in operation. He feels that would interfere with the signal path, hinder the SQ... First world problems. I'll manage! 

Are the M2 amps class a/b. I'd guess as much. I think they run at 100 watts. Class A @15 watts would be phenomenal!  Class B for the rest would suit fine!