Hello, I only have to add it for a few days until I receive the new quartet, 4 tubes. Now i have used pair Mullard el84 and pair Silvania. How would they put them? interleaved per channel or 2 M on one channel and 2 S on the other? Thank you
You should specify the amp you're using them in. Yeah, I would use matching brands on each of the push-pull pairs. E.g. Mullards on L and Sylvania on R. It's not ideal but it can work OK in a pinch. Of course if the pairs are not well electrically matched, I'd just wait until the quad. Heck, I would probably just wait until the new quad anyways.
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