What is the Pha Sym adj on my rev blue?

[jlbaxe]

What is this PHA SYM ADJ on my Rev Blue. I did a google searched and could not find anything.

 

[leib10]

I'm kinda curious about that too!

 

[glip22]

It's a phase inverter symmetry adjustment knob. Bogner reccommends only touching it with a scope. You won't hear much tweaking it by your ears. It does have a visible change on an O scope though. I wouldn't worry about it.

 

[jlbaxe]

Wow! Thanks.

 

[glip22]

Wow! Thanks.

There is some info around about it. Google it.

 

[moltenmetalburn]

Phase symmetry or hum balance pot.