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Cary Audio Design Superior Quality and Value

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  #11  
Old 10-25-2019, 10:40 PM
decooney decooney is offline
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Originally Posted by Pack66184 View Post
Looking forward to reading your review!
Sylvania 6SN7GT vintage - nice clean typical NOS sound, mid sound stage. Nothing overly noticeable. Maybe a tad tipped up on high frequency on my system.

Tung-Sol 6SN6GTB - forward midrange, wide sound stage, not as deep. Full sounding and a tad rolled of on top at 40hrs burn in.

TJ Full Music 6SN7 (now NOS) - Nice smooth, deep soundstage at first. More musical at strings and piano early on. Then got veiled over for a bit during burn in at 20hrs. At 40hrs started opening back up and getting fuller - slowly. 100hrs burn in required I'm told. So far so good. We'll see how long long they last.

RCA Black Plates - already tried them a while back. Nice, sound similar to my Sylvanias.

Letting the TJ FM tubes run. Don't want to pull them out, just enjoying them. My buddy runs them in his Dennis Had Inspire and likes them a lot too.
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  #12  
Old 10-27-2019, 01:21 AM
Bombadil Bombadil is offline
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Originally Posted by decooney View Post
Bombadil,

By chance was this your post on AK about $78,000 VAC amps using new Tung Sol 6SN7s? https://audiokarma.org/forums/index....#post-11965490

.
Yes, it was. I made contact with someone from VAC and they told me that they loved the new production Tung-sol. They said they liked some vintage tubes better but they could not reliably obtain vintage tubes in quantity which met their testing standards. The new T-S can be purchased in any quantity and a high percentage of them test well.
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  #13  
Old 10-27-2019, 08:16 PM
decooney decooney is offline
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Originally Posted by Bombadil View Post
Yes, it was. I made contact with someone from VAC and they told me that they loved the new production Tung-sol. They said they liked some vintage tubes better but they could not reliably obtain vintage tubes in quantity which met their testing standards. The new T-S can be purchased in any quantity and a high percentage of them test well.
It would be interesting to hear those VACs with the new-production tubes they were designed to run, and see if NOS sounds better or worse.

.

Last edited by decooney; 10-28-2019 at 09:08 PM.
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  #14  
Old 11-11-2019, 03:40 PM
decooney decooney is offline
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Update #3:
After 40+ hours on the new Tung-Sol re-issue 6SN7GTBs, they are actually more usable than I first thought. I went back to my NOS Sylvania 6SN7GT quad for a week or so. Nice, more detail, deeper sound stage with NOS (yes) but not as full bodied and not as much midrange (pro or con) as the new TS Russian re-issue. The midrange of these tubes is kinda growing on me.

After more listening, I decided the coupling caps in my DAC may in fact just be a tad too bright for most tubes including NOS, so I added PIO bypass caps for a little more texture and tone in the DAC. Ran the new bypass for a few weeks with brighter NOS 6SN7s. Nice, but still not as full bodied as the new TS reissue as I recalled. Back to the new TS.

Put the new TS 6SN7GTB reissue tubes back in the SLP-98 preamp. With some more time on the tubes and combination of the softer caps, the new TS can take on an interesting tone, nice texture, added 3D effect, and CAN BE a bit more musical than some of my NOS tubes. Seems it's the "midrange" of these new tubes helping this to happen. With more time on the tubes now some of the upper detail starts to come back through again, but in a good way, not as harsh.

Starting to wonder if many people who test these new re-issue TS tubes just don't give them enough time to settle in before drawing final conclusions. Tung Sol's page does indicate these tubes take on a "5692" tube sound and this seems to be true. Not a bad tube at all, kinda like them better than my NOS in some ways. Ordered another pair of TJ Full Music to run a full quad in the SLP-98 next, and will compare them to these new TS reissues and recompare to the vintage Sylvania 6SN7GT tubes again.

Pro:
Listening to the new 6SN7GTB Russian TS tubes at a low-volume-level is a bonus. Sound nice and full, and with the right interconnects they still have detail coming through now after 40+hours burn-in. They can be musical, nice.

Con:
Give them time, I prejudged these tubes too early, and still am, will let 'em run for 100-200 hours and see how it goes in a few weeks.
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