Look all, to prove it to yourselves that Zero's are a band-aid fix, just put a pair on an amp and speaker that have NO problems with each other and hear what happens, SOUND QUALITY TAKES A BIG HIT!
We've done the experiment at our audio society meeting, and it was 100% unanimous, that the Autoformer is a baind-aid for a problem that should be fixed at the source with different speaker or amp.
Cheers George