Just found this discussion. I have a Mac MA352 I’ve been waiting for them to finish building and have read at least one person here with a big improvement replacing stock 12AT7 & 12AX7 with PSVANEs. Chinese tubes on Amazon at $50/pair, matched. They look a lot like the Ray Tubes which are 4-5x that. Anyone know anything about this, and I’d also like to know where Macintosh gets their rebranded tubes.
