PSVANE 12Au7 12At7 12Ax7 "-T MKII" 2020 production run of small signal/driver tubes


Re-testing year 2020 production run of these tubes. Would like to hear from others who’ve re-tried recent production?

>>PSVANE 12Au7 12At7 12Ax7 "-T MKII" small signal/driver tubes made in year 2020"

Background:
After following stories about TJ Full Music’s founder passing, and the son reselling tooling of all of the small signal tubes to PSVANE, and recent luck over the past year with TJ 6SN7 tubes for my preamp, I thought I’d give the new PSVANE small tubes a retry. Checking to see if any designs or manufacturing goodness made it over to PSVANE yet from TJ. Also, took advantage of an opportunity to buy these direct from a major overseas distributor, direct. So far so good. Comparing to other known vintage tubes. Also following AudioNote’s recent use of PSVANE tubes in their preamplifiers, amplifiers, integrated amplifiers.

GOAL:
Find something "close enough" and hoard away all my vintage tubes. An improvement is always great too.  

COMPARISONS to vintage, others:
-Currently comparing to my vintage stash of 1960s Mullard "Blackburn", Tungsram, RCA, Sylvania, others.
-Also comparing to prior 2012 versions of these same PSVANE tubes made over eight years ago.
-No need to compare to new re-issue Mullard or JJ or other. Seems these new PSVANE are on a different level.

INITIAL Impression first 20 hours:
-a tad harsh and grainy
-midrange is obvious
-top end not rolled off
-sound stage front row, initially
-decent, interesting

AFTER 72 hours burn-in:
-smoothing out nicely, not there yet, close
-sound stage dropping back to mid-hall
-texture starting to come in
-nice midrange, top end smoothing out more
-tone of piano and guitars shaping up nicely
-Nice, haven’t pulled them yet!

APPLICATION
My mono tube amplifiers
(2) Input tubes; 12AU7s
(2) driver tubes; 12AT7s
Friend testing in his preamp
(2) Input, preamp: 12AX7s

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REQUEST:
Would like to hear from others who’ve re-tried recent 2020 production of PSVANE 12AU7 or 12AT7 or 12AX7 ?
What are you hearing, are they better than prior PSVANE versions you tried years ago? Similar findings or ???





decooney

@decooney ,

I see that you revived the thread after almost 3 years. Things changed between then and now. I did try a pair of NOS Mazda 12AU7 and loved them for their naturalness and definition in general. I had purchased warranty of 2 years on them and wanted to preserve them. Close to that time, a Psvane representative on this forum mentioned about the new Horizon series tubes, which he said were more neutral compare to the ART series. I had "alright to very good" experience with the Psvane tubes, as you have read my experience above. So I decided to give them a try.

For me, these are so much better than the Art series in every way. I found that they present the music without adding anything to it. I have experienced the "warmth" with the Genalex. But I liked the naturalness of the Mazdas. These fall along the Mazda lines, so much that I did not bother to take the Mazdas out now. Honestly, I like these better than the Mazdas in the bass, there these are a bit more taut. And these are priced at $49 (I paid $55) for the pair, on Amazon. So you really lose nothing and can return them if you did not like them. There are a couple reviews that compare these to the Art Series.

The only concern for me is - how long will these last? I installed them at start of September; so nearly 4 month now. They have been doing their thing and I have not focused on them. I am just happy that they allowed me to enjoy the DAC upgrade very recently. Hope this helps.

@milpal The only concern for me is - how long will these last?

This is the question for me too. I’m now holding off on reselling any of my vintage collections of 12au7, 12at7 tube pairs. This is a result of tube failures after 8hrs use of new Gold Lyon pairs - argh. Awaiting a refund now. My 2yr old pair of PSVane MKIIs are working fine, I just put them back in play for now. All vintage stuff stored.

Looking closer at the PSvane "Art Series" I noticed something familiar. They look a similar to the former TJ Full Music small tubes. The son of TJ Full Music told me a few years back they sold off all the tooling for those smaller tubes to PSVane. Wondered what happened with all of that. Yesterday I saw this on TubeAmpDoctor site for the PSVane Art Series 12au7 description,

Quote, TAD:

https://www.tubeampdoctor.com/en/search?sSearch=12au7

"Psvane 12AU7-S Art-Series, Matched PAIR (2 tubes)

The all new 12AU7-S Psvane Art series is supplied as a factory matched pair. A completely new production based on the manufacturing technology obtained from Full Music. The development and material composition of the...

Seems like it might be true. Interesting considering PSVane is capable of desighing and building their own tubes, yet they may have leveraged this from TJFM. Interesting.

As for Horizon Series from PSVane, the main thing I read is they needed to offer a "lower cost tube", and how its a neutral sounding tube, as you’ve noted. I’ll look for more PSVane Art Series vs. Horizon Series reviews, Thx.

 

Found the more recent thread where a member @alightronics is representing communications for PSVane about the new Horizon vs Art Series, in response to @milpai. Good to read, thx

https://forum.audiogon.com/posts/2703446

 

Found the more recent thread where a member @alightronics is representing communications for PSVane

That is the one I had linked in my response earlier today.

okay, @milpai seems I missed the former hyperlink in to prior reply, got it.  I see it now. Thx.  

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Still looking for anyone current/still using the Art Series small signal tubes from PSvane. Looking over the new Horizon series in small tubes, appears to be a non-gold-plated pin version of the same tube, yet they talk about that new coating used inside. Nice to have some options.  Might have to give both a try.