Sorry, don't know about the phase inverter, but to get the equivalent of a pair of monoblocks, I'm running a single channel from two different Dyna/VTA 70 amps. I just removed the output tubes from the unused side, and also switched to a SS rectifier. They sound pretty amazing.
Stereo to mono bridge/phase inverter for AVA ST70 amplifier
I have 2 AVA ST70 amplifiers that I want to use as mono. AVA did offer a stereo to mono bridge/phase inverter in the past. AVA now says that they don't supply this and are not sure if anyone is making a phase inverter suitable for hi-fi. I would appreciate any help on this matter.
