I have a vintage Conrad-Johnson PV 11 preamp. I’ve always re-tubed it with the cheapest tubes from Tube Depot (e.g. Electro-Harmonix 12AU7 and 12AX7, Sovtek 5751 and the like.). I’ve been very happy with the sound. My question is: Would it be worthwhile to spend more money on more exotic tubes? Would there be any appreciable difference in the sound? I’m powering the system with NuForce Reference 9 V3 monoblocks.
I ended up ordering a matched pair of 12AU7 RCA Cleartop (side getter) tubes from Brent Jessee, raved about by both Brent Jessee and Joe’s Tube Lore, for $69/pair. Tube Depot is way overpriced. I’ll have to use my credit on something else.
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