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I am really liking my newly-acquired CJ PV2 ar preamp (factory sticker on the back says it was revised). It has a 6 tube complement of
1- 12ax7
2-12AT7
3- 5751Does anyone know what original brands came with these? Were they American or Euro? I have some good tubes in this one, but a bit of a random bunch. Just want to get it closer to original (and play with sonic differences).
Thanks for any advice or info about this great vintage preamp. Did a search and didn't find the answer to this.
Follow Ups:
Hi PeteMy guess would be Euro since the PV2A came out in 1980. I have a second-hand PV2 that was updated to a PV2ar by CJ. At the time it came into my possession, it had a mixture of US and Yugoslavian tubes. I replaced all the Yugo tubes with US tubes. I've had good luck with vintage RCAs esp. in the phono section.
Thanks. Which tubes are the phono section? I know one or two are 5751. Right now one 5751 spot is occupied with a 12ax7 - a no-no, but at least it's a good tube: Amperex Bugle Boy. I am looking for a good vintage 5751.Not sure how important it is to match pairs. I have
RCA 7025 in the 12ax7 spot
RCA 12AT7
Siemens 12AT7 (this may be original)
GE (USA) 5751 (2)Very eager to get the best tubes in the right spots.
I believe V1 is the phono section. You would want a 12ax7 or 7025 here because of the gain needed. Matched pairs are not needed for small signal tubes.
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