Good sounding, reliable NOS tubes are getting harder to find as time goes on. I found matched quads for $450. IFAIAC that's too much money to spend on something older than I am especially when you don't know how long it's really going to last. SO... I think going with a good strong new tube that's priced right and readily available and rolling in a new high quality cap is a better option....at least for me.
I've noticed in the reading I've been doing over the past several months caps are discussed like tubes. The authors use the same language and terms when describing what they lend or don't lend to the sound. Keeping that in mind I developed a 'modding plan' for my CF amps. I've read where some modders have replaced just the resistors and that alone made huge differences.
Better parts and all huh?
I welcome discussion....what do y'all think?
Its going to be used equipment when I sell it, so it may as well be used equipment when I buy it.