Is it save to convert XLR to RCA?

I shorted pins 1 and 3 and still the same old buzz. I appreciate your help on this Al.

Well I once again removed all from the amp except the speakers. Turned the amp on and no buzz. I do get some tube rush from the tweeter in one speaker, but that must be my input tube in that channel. Just a tube hiss, not a buzz through the highs and lows.

Step by step one thing remains the same.... As soon as I use any sort of preamp the buzz comes. I switched out my ic's and still the buzz. I used different power cords and still the buzz. I used cheaters on both, one and still the buzz.

I will check correct polarity from the outlet today.

That all continues to be pretty baffling. Does the buzz still occur if the preamp is connected to the amp but the preamp is not turned on, or is not plugged into the AC outlet?

-- Al

I'm empathetic, Grannyring...I'm chasing a buzz, the 60/120 Hz type, haha, as well. Elusive things, aren't they? ;-)

Regards,
Sam
p.s. Hi Al :-)

Yes Sam. Chasing a buzz.

The preamp need only be in the system and not turned on. Just the ic's hooked up to it.

I ran a wire from the chassis of the pre to the chassis of the amp and still a buzz.