Hey Everyone. I have bought 2 NOS 12AX7 tubes for my EICO. It currently has all of its original Mullards. That's 4 - 12AX7's and 1 - 6X4 rectifier.

I am curious how location will effect, or not effect the result. Is there a best way to do this? I would assume that with one pair, I should try and maintain balance between the channels in conjunction with the Mullards. So one of each per.

Any thoughts on this, or should i just get in there and try whatever.