Have about 16 hrs. on the lil' Vali..... $119.00 buy's a helluva lotta' heart! The high voltage rails love the higher impedance Sennheiser 600, leaves enough left over current to push, fairly convincingly, the HE-500. The very sensitive psb M4U1 loves the articulation of the very linear Raytheon's that are used on the inlet. I can hear only a slight hiss (tube rush) using the psb.... it totally is masked from the first note. This amp is highly recommended!
Microphonics are not a problem if you plug a phone before start-up and leave it plugged for the session. Another day, another phone..... I'm using some of the cork, rubber insulators (TTVJ) to lift it from the table and let air flow all around. It does get warm from a day of pounding.
The amp has a natural, very organic capability. I was flabbergasted at it's ease of dissemination of some fairly dense and dynamic Classical material (Mahler!), then the spread of some massed choral vocals that simply glowed and bloomed during playback. Most convincing! From Rock to Rachmaninoff, it didn't care......
Edited by achristilaw - 11/30/13 at 7:14pm