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Where to put 4 tubes on a 6 tube preamp?

I just picked up 4 really nice Amperex 6922 tubes for my 6 tube Sonic Frontiers line 1. I was wondering were to put them (and use the stock Sovtek for the other 2 inputs)?
Is this a good idea? or should I just pick-up two more Amperex tubes. I've heard it mentioned that you really only need two good tubes and that the other inputs are for bias control, but can't find any real info on this.
schmeed

Showing 1 response by mechans

mechans
3,048 posts
 
If you get the service manual from mad Manuel's manuals on ebay it should tell you where it matters.
BTW I understand that only a few tubes can be used in a SF. Amongst them are the Sovteks are you sure the Amperex won't become expensive toast.
I would ask Jim McShane over on the tube asylum or just search the archives.
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