Short version: Do the 6SN7 tubes in the Woo Audio WA5LE (300B SET topology - see pic below) need to be matched?
Long version: I am getting ready to sell my Woo Audio WA5LE to make room and money for the future BHSE. However, one of the stock "matched" driver tubes that Jack sent me with the amp (a cheap Tung Sol 6SN7gtb) was very noisy and tested much much lower than the other when I got it. Since I never planned to use the stock tubes, it wasn't a problem. Now that I am selling it, I am thinking of selling the amp with an option to buy the amp stock (without "upgraded" tubes) and so I feel that I should include one pair of cheap 6SN7 tubes. I do have another Tung Sol 6SN7gtb that came with my Apex Peak amp that is unused and probably good (but certainly not "matched" to the other TS 6SN7gtb that came with the WA5LE and is a completely different date). Would it be ok to use those together (an "unmatched pair") in the amp?
Here's a picture I found of one at HF - it may have upgraded parts though.