Philips /Amperex 7316, Siemens 5814A, CBS 5814A
Puma Cat,
I use 6- 12AU7s in: McIntosh MX110, MR67, MC240 (2), and Scott 330D (2).
12AU7's I have that are not in equipment:
12AU7 [6] 1, 2, 2, 1 TOTAL: 67
Philips SQ/ by Siemens 5814A -3 mica- DE- NOS
Brimar ECC82 cleartop- GB- NOS
Sylvania JHS 12AU7WA- 6189- NOS 66
HP/ Amperex-- NOS
HP/ RCA- cleartop- NOS
RCA- 5814A- black plate 2 mica- NOS
RCA/ Textronix 2-matched prs "cleartop" NOS
Valvo/ Philips ECC82- dimp disc-Holland -NOS
Valvo/ Siemens E82CC- NOS
CBS 5814A- JHS blk plate- stirrup gtr- NOS 57
RCA cleartop- USED
Amperex Bugle Boy 7316- Holland- NOS 64
RCA “Command” 5814A- NOS
CBS 5814A- blk pl- sq gtr- NOS/Used?
Sylvania 5814A- USA- c.1970
National by RCA- 5814WA- black pl- US- NOS
Siemens- E82CC/6189- 2mica, halo- DE- NOS
Siemens 5814A -3 mica- USED [25
Valvo 6189- RTC- France- db gtr sup- NOS (17,17)
Valvo ECC186/7316- Holland- 1965- NOS [21
Siemens/H E82CC/6189- 3 mica- DE-NOS [13
Overall my favourite 12AU&s':
1. Philips / Amperex/ Valvo ECC186 / 7316 : The Philips 7316 I think is the best all round 12AU7- superb natural refined sound, balanced, detailed, dynamic, effortless transparent bass, while not too forward. There are three versions of the 7316, and by reputation they are all good. Getting expensive. I liked the 7316 so much I bought enough of these to use in every place I use the 12AU7.
2. Siemens triple mica 5814A : The Siemens is energetic, precise, and dynamic, the tube I like to wake up sleepy or softish vintage. Very quiet, with an extended powerful bass. Getting expensive. I also liked the Siemens 5814A so much I bought enough of these to use in every place I use the 12AU7. This tube is also seen as E82CC- and is usually less expensive with that designation. I'm using the E82CC version in the MPX section of the McIntosh MR67.
3. CBS 5814A: The old black plate CBS 5814A is another nice one everywhere I've tried it- vintage nad newer stuff- with a clean, detailed and dynamic sound, excellent, open bass and natural treble. Not expensive. I'm using this one in the Scott 330 tuner.
4. RCA "Command" black plate 5814A: This is surprisingly good - like most RCA tubes does everything well, with a good natural timbre and sense of authority through the whole range, while also open and quiet. Better in modern gear-as it's not as fast as the Siemens These are for me a kind of "sleeper" as they are so good, but still very inexpensive for the sound.
5. The ordinary early to mid 60's Philips/ Amperex/ Valvo ECC82 is really good : smooth, detailed, nice sense of openness, quiet.
So, there are few suggestions. I know the PV10 and not the 12 - and which are different series. I think with the PV12 having the reputation of a more modern and neutral sound my suggestion would be for the Philips-made 7316 or the CBS 5814A
I'm guessing you may find the RCA "cleartop " a bit forward or bright, but that's without any experience of that one in the PV12 of course.
The attachment" A pair of HP labeled Philips/Amperex 7316s
Cheers,
Bambi B