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Anyone Tube Roll with the ZMA yet? (Read 49968 times)
stone_of_tone
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Re: Anyone Tube Roll with the ZMA yet?
Reply #300 - 01/06/18 at 18:24:24
 
Fair question to ask Archie, to qualify my situation. Like 9 pin input tubes and inverter's....in which, you know I roll like changing my socks... = a lot.....and always require that slight tilt and roll to pull in and out....never straight in or out and the same for the output tube sockets. The quality of Steve's socket choice is to be commended = Quality.

These two Quads in question, just plain flat out get stuck....and let you know you are DONE....and do not force.

Scratch my head disbelief?
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stone_of_tone
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Re: Anyone Tube Roll with the ZMA yet?
Reply #301 - 01/06/18 at 18:30:46
 
.....and I have triple checked...I don't have an micrometer, so, to the naked eye....the diameter of the pins and placement/distance of the pins to the slot grove (I call it) all check out .....once again to the eye only.

The slightly larger pin size, one can't tell to the eye...must be the culprit...from what I'm experiencing when trying to get them in.

I will be content with 9 pin tube rolling with my 6 pin 6P Reflectors & 7 pin Tung-Sol KT66's.
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« Last Edit: 01/06/18 at 18:35:24 by stone_of_tone »  

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Archie
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Re: Anyone Tube Roll with the ZMA yet?
Reply #302 - 01/06/18 at 18:34:25
 
While not ideal, do you get enough purchase for good electrical connection?
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JD
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Re: Anyone Tube Roll with the ZMA yet?
Reply #303 - 01/06/18 at 18:36:52
 
And it was my amp in question about the sockets so I would not try them. Geez never would have sent you those if I knew, glad you didn't force em in. Wonder if the RFT might not be up to snuff? I bought em from a guy in Germany...huh.

JD
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stone_of_tone
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Re: Anyone Tube Roll with the ZMA yet?
Reply #304 - 01/06/18 at 18:38:02
 
Do they go far enough in to connect....are you asking?
Of course, without fitting flush down in ~ I would never turn my ZMA on.

Define....."enough purchase".....I have these on loan from JD.
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« Last Edit: 01/06/18 at 18:44:05 by stone_of_tone »  

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stone_of_tone
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Re: Anyone Tube Roll with the ZMA yet?
Reply #305 - 01/06/18 at 18:39:36
 
No worries, JD. You would have no way of knowing....what amp of yours did you have both of these quads in?
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JD
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Re: Anyone Tube Roll with the ZMA yet?
Reply #306 - 01/06/18 at 18:53:38
 
I had em in a Torii III. I used the RFT for a couple hundred hours as well.

JD
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Re: Anyone Tube Roll with the ZMA yet?
Reply #307 - 01/06/18 at 19:02:17
 
Whom would have guessed? I know it's not operator error (meaning me).

....and in no way, shape or form, am I messing with my/these sockets.

I thank you for sending them. I will get them back out to you on Monday and include a check for your postage paid.
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« Last Edit: 01/06/18 at 19:05:26 by stone_of_tone »  

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Re: Anyone Tube Roll with the ZMA yet?
Reply #308 - 01/06/18 at 19:17:15
 
Stone,

If only you had some calipers ...

I measured several tubes' pin diameters:

Raytheon 12AU7: †0.040"
Raytheon 12AX7: †0.040"
New Mullard 12AX7: †0.039"
Steve's Russian ZMA power tubes: †0.040"

Tung-Sol EL34B: †0.093"+
Tung-Sol KT66: †0.093"
Gold Lion KT66: 0.093"
Russian 6Ps: †0.093"

So, good consistency across tubes and brands. †If your tubes are big pinned it would be unusual but that's the only thing that makes sense.
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« Last Edit: 01/06/18 at 19:18:13 by Archie »  
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stone_of_tone
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Re: Anyone Tube Roll with the ZMA yet?
Reply #309 - 01/06/18 at 19:32:22
 
I agree Archie, ....the only thing that makes sense/the culprit....is that they are big pinned/diameter of the slightest increase/micro.

These particular ZMA sockets tighter......... .

Well, I can live with 9 pin rolling....and I love my KT66's and these 6P's. I'm going to get another quad of each of these brands...I always make sure they work and bias ....and put them away.

I can't risk buying anything else.

I got lucky, .....I did not buy EL34's....5881's and/or KT88's!

Heck, they/these JD quads, might measure perfect/in diameter...maybe these particular ZMA sockets/slightly out of spec, are just plain flat out tighter....are the culprit......and one would have no way of knowing....because the KT66's / Tung-Sol that ship with these sockets, fit fine in the shop....and I got lucky on the 6P Reflectors!

Hey, $21/22 bucks round trip was a much smaller price to pay than otherwise.
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« Last Edit: 01/06/18 at 20:33:19 by stone_of_tone »  

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Re: Anyone Tube Roll with the ZMA yet?
Reply #310 - 01/06/18 at 20:45:11
 
So, bottom line:

Tubes are slightly larger in diameter/pins

~ or ~

these particular ZMA tube sockets are slightly out of spec.....that are accommodating the tubes that ship with them/KT66, 7 pin and of course fit my subsequent KT66 Tung-Sol current production tube purchases/two other quads.  Plus, luck on the Reflector 6 pin quad 6PS3-E's....fitting.

Once again, I have ruled out operator error/ME. These two quads will not fit in my ZMA sockets:
RFT German EL34's/8 pin
&
PSVANE 5881/6 pin.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #311 - 01/06/18 at 22:45:50
 
That is very disturbing. I have both the RFT EL34ís and the Psvane 5881ís on order. Iíll report back when they show up.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #312 - 01/06/18 at 23:51:15
 
Hard to say if tube pins or sockets.  My guess is sockets.  My RFT EL-34's slide in and seat with no problem.  Now, I am not sure the history of my "red capped" ZMA, which is the same run as Stone's, as I am the second owner.  It could be that the first owner did the deed and applied whatever pressure was necessary to get the sockets "opened up" enough to handle any tube.  But then there is Archie's post showing some rather impressive tube pin diameter consistency amongst various tube types.  Sooooo then what???

Man, this is a head scratcher for sure.  Time for a direct message to Steve as he may shed some light.  It would be a shame not to run whatever compatible tube you want Stone, but I don't blame you for backing off.  It simply is not worth the tube or socket damage at this point.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #313 - 01/07/18 at 00:30:45
 
If it's the sockets then all of the tubes should be tight.

I gotta believe Steve used the same sockets in our ZMAs.  Raven's, being the prototype, might be different.  Stone's is #1 and mine is #9, also red caps.  I don't remember ever having to force a tube in -- as if I were opening up the socket.  What we need, is someone with calipers to measure the offending tubes.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #314 - 01/07/18 at 00:47:27
 
Yeah, none of it makes any sense.  I don't believe the sockets used in ZMA and Torii are different.  So why did those tubes work fine in NormD's amp?  

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Re: Anyone Tube Roll with the ZMA yet?
Reply #315 - 01/07/18 at 01:31:05
 
A point of clarification:  I hav e5e RFTíS AND 5881ís on order.  I have ZMA #14. Iíll let you want I learn the tubes arrive.

Right now I am in bliss with my 6PS3ís.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #316 - 01/07/18 at 01:39:20
 
Sorry, my bad.  I meant to write "JD", not NormD.  He has a Torii and these tubes were not issue in his amp.  I am assuming the sockets are the same make/model, but I could be wrong.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #317 - 01/07/18 at 03:13:56
 
Thought I would jump in and mention that we are using the same sockets for 17 years. †People who tube roll a lot may †loosen some of the pin holders in the tube socket (it only takes one) which can cause intermittent results. †In most cases the sockets can be re-tensioned with the right dental pic style of tool and if not then the socket can be replaced by us. †So far we've replaced about 30 sockets in the past 20 years. †There are devices called "socket savers" that are excellent to use when rolling tubes. †Then when you finally make your choice, you can install the tube without the socket saver.

Another thing that helps is cleaning the tube pins with a pencil eraser, then give them a squirt of "DeoxIT D5" contact cleaner and insert the tube immediately while the pins are still wet.

Also it is important to know that the tube itself can have the exact same intermittent operation of one of it's pins that can not be seen with the naked eye or felt. †It will absolutely fool you into thinking you have a bad tube socket, or bad soldering of the tube socket. †

In the Decware amps, no circuit board is used and everything is carefully hand soldered with flexible wire, so the odds of the socket having a bad solder joint are very low.

Regarding output tube pin diameters and socket tightness... when Decware amps are new, the sockets are tight to extremely tight.  Ad to that the fact that most 8 pin output tubes have solder blobs on the tips of the pins that can make it almost impossible to insert the tube in the socket.  I know because I have filed off hundreds over the years as we tube up the amps during the QC process.

Steve

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Re: Anyone Tube Roll with the ZMA yet?
Reply #318 - 01/07/18 at 03:32:25
 
Thanks for that Steve.  Very helpful/useful to know.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #319 - 01/07/18 at 04:27:41
 
Thanks Steve. As you mentioned when new; the sockets are tight to extremely tight. I have rolled plenty with my 9 pin and none with the output tubes/till now with the 6P's, etc... .... So those four sockets are still extremely tight.

I'm going to try again tomorrow. All sockets are functioning perfectly and a testament to their quality.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #320 - 01/07/18 at 04:30:10
 
Stone, time to greez 'em up!  May the Force be with you.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #321 - 01/07/18 at 12:46:53
 
Stone,

Feel free to shave em down a bit to make em work, all good with me.

JD
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Re: Anyone Tube Roll with the ZMA yet?
Reply #322 - 01/07/18 at 15:16:29
 
Thanks JD....I was going to ask you just that.

Thanks again Steve, now, inspecting the two quads in question....with an LED Flashlight and my geek magnified glasses (also visible to the naked eye when you look close and feel too-blobs on the tips of the 5881's for example)....some filing is in order and minimizing stress to my output sockets.

I will get to it later in the week and get back. This morning, I'm enjoying my Ediswan, Telefunken & 6PS3-E Reflector quad...... .
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« Last Edit: 01/07/18 at 15:52:49 by stone_of_tone »  

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Re: Anyone Tube Roll with the ZMA yet?
Reply #323 - 01/07/18 at 15:54:08
 
Furthermore, pardon me ignorance as well, to filing, eraser & D5 tips. It was time I finally got around to rolling output tubes and breaking in my tight output tube sockets...as I have done with my 9 pin sockets (always with Kid Gloves).
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Re: Anyone Tube Roll with the ZMA yet?
Reply #324 - 01/07/18 at 16:35:45
 
Filing, wiping clean and then wiping on/applying XLO TPC.

https://www.kosmasaudiovideo.gr/showprod.php?id=1961

TPC goes way back to over a decade ago....one of my favorties....and glad I still have a few sealed packs. Time to break it out again.

".....chemically-treated wipe neutralizes oxidation, protects against corrosion, and even - by soaking into and filing micropores
in plated contact surfaces - increases total effective contact area, for better signal transfer and reduced low-level information loss."
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« Last Edit: 01/07/18 at 16:39:55 by stone_of_tone »  

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Re: Anyone Tube Roll with the ZMA yet?
Reply #325 - 01/08/18 at 18:31:00
 
With further thought, I have decided not to file on these two quads; not being mine. Thanks again to JD. Either of us could not have predicted my very tight output sockets. I will get them on the road to JD tomorrow. I wanted to mention.....in case anyone was wondering down the road, why I never reported on them.

I am very pleased with my 6PS3-E's & KT66's, with my input NOS tube rotation. My constant inverter's are my Telefunkens. I will in the near future, buy a quad of KT88 GL's from Ron at Cyro. I will be comfortable filing on them/quad...if need be and clean with TPC. †

Right now? I am in wait for my ZROCK2 and look forward to spending late winter and Spring with it. I will review the great info in that Thread about rolling a few tubes with her.
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« Last Edit: 01/08/18 at 18:33:23 by stone_of_tone »  

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Re: Anyone Tube Roll with the ZMA yet?
Reply #326 - 01/12/18 at 00:56:29
 
I received my RFT ( SIEMENS ) - NOS - EL 34 from someone in Germany.  I had to problem inserting them into my ZMA sockets.  The sound very good and are giving my 6P3S's a good challenge but the latter seems to be the winner in overall dynamic range and air.  I'll leave the EL34's in for a week and see how they settle out.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #327 - 01/12/18 at 01:05:40
 
That's sort of my finding with Tungsol EL34 vs the 6P3Ss in my ZMA.  Except my EL34s went right in (and came out a couple weeks later).
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Re: Anyone Tube Roll with the ZMA yet?
Reply #328 - 01/12/18 at 02:02:47
 
My PSvane EL-34PH's smoked the Tung Sols in an A/B.  I haven't put the RFT's in yet to compare, but hope to do so within the next week or two.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #329 - 01/12/18 at 03:57:30
 
Yes guys I'm loving the 6P's. Dymanic's and air I will say too, Norm. Running with Edi's and the Tele's. The tighter and more articulate detail tone/bass in these has me sneering at my KT66's over on the shelf.

The rock solid bias and balance I have not needed to touch since day one and I'm on day 17. So, glad these came back to mention.
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« Last Edit: 01/12/18 at 03:58:31 by stone_of_tone »  

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Re: Anyone Tube Roll with the ZMA yet?
Reply #330 - 01/12/18 at 05:28:23
 
Quote:
The rock solid bias and balance I have not needed to touch since day one and I'm on day 17. So, glad these came back to mention.


Right??  It is quite remarkable!
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Re: Anyone Tube Roll with the ZMA yet?
Reply #331 - 01/20/18 at 16:59:08
 
It is remarkable. This is the tube that in addition, to the 6C33C, is probably in Russian Mig's too. Unshakable!

The tonal balance neutrality of this quad with no edge, bolstering its neutrality with warmth that is not overly sweet....has me pinching myself with these. At the bottom of that tonal balance/rock solid bass....at the top they opened up with air and more air. No hyperbole. It takes a lot To impress me when you're running the input tube groups I'm running and inverter's to the output contenders. These are winners. 6P.....

I will eventually order KT88's from Ron. Right now though, I will not take these out.
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« Last Edit: 01/20/18 at 17:01:11 by stone_of_tone »  

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Re: Anyone Tube Roll with the ZMA yet?
Reply #332 - 01/20/18 at 17:05:19
 
Jeff:

So if you had to do it all over, would you pick the PSvane EL-34PH's or the 6P3S's?

Why do I have this feeling you will tell me you want both...

Norm
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JRMedia Center running on a MacMini
Oppo 103D for video
Marantz AV8802a Pre
ZTPre & ZMA for Stereo
Rotel RMB-1585 amp
Focal Electra 1038Be speakers (93 db)
2Hsu Research ULS-15 M
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Lon
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Re: Anyone Tube Roll with the ZMA yet?
Reply #333 - 01/20/18 at 17:07:00
 
They're very good tubes, glad they get talked up here on the board.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25, Taboo MkIV;PS Audio: Soloist SE, DMP+DSD, P10, PowerBases, XStream Statemt spk cb, AC-12 power cds; Mapleshade:SamsonV2+V3; Oppo UDP-205;VooDoo Cremona +Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Audeze LCD-2
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Jeff of Arabica
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Re: Anyone Tube Roll with the ZMA yet?
Reply #334 - 01/20/18 at 17:10:01
 
6Pís for price, first and foremost.  And the beautiful mids.  However, there are things the PSvís do better and I really enjoy having them in.  But considering the price difference....  Ive gotta go with the 6Pís.
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ZMA//Zen Ultra//Torii//ZDSD//PS Audio DirectStream DAC + Memory Player + P10//Rachael//Super Zen Triode//Taboo MK III//Muse Phono Stage//London Decca Reference//Dynavector DV-507 MKII//Zen Head//SonoruS Reel-to-Reel w/ tube playback pre-amp//Omega SAHOs//Monoliths
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Archie
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Posts: 869
Re: Anyone Tube Roll with the ZMA yet?
Reply #335 - 01/20/18 at 17:53:30
 
I have three quads of these, two from a Russian seller and one from Cryoset.  I'm always tempted to get another but honestly, I haven't come close to wearing out a quad yet.  It will be interesting to see what kind of life these are capable of.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #336 - 02/19/18 at 16:15:46
 
They are so rock solid in their Bias & Balance and their even handed rise on the Meter's. Archie, it will be interesting to see what kind of life these are capable of, for sure.
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Sony as Transport
Illuminati D-60
Audio Alchemy DTI-Pro
Audio Magic Mystic Reference I2S
Audio Alchemy DDE 3.0
Kimber Select 1030
Zen Select #76
Kimber Select 3033
Polk Audio LS-90
Tri-config/TipToes & Vibropods underneath Speakers
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Posts: 869
Re: Anyone Tube Roll with the ZMA yet?
Reply #337 - 02/19/18 at 16:41:01
 
Stone, here is another tube for you to try.  The Russian 6N5P that Steve is now using in the Torii Jr.  I have them in my CSP3 and ZMA.  At about $3/tube you can't go wrong.  I bought 8 to start from ebay and I have another 12 on the way.  This is the seller I just bought from.  The price is for a lot of 4 tubes but his shipping doesn't go up much when you buy more.   Smiley

https://www.ebay.com/itm/6N5P-Tubes-made-in-USS-Lot-of-4-pcs/202104226176?ssPage...
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Re: Anyone Tube Roll with the ZMA yet?
Reply #338 - 02/19/18 at 16:42:50
 
I popped my set back in last week after a long stint with my PSvane EL-34PH's.  Yep Stone, they rise evenly and got settled quick.  Had them re-biased in a matter of seconds.  And after checking a few times throughout the night, they were still sitting put where I left them.  Pretty incredible.  

I just get a feeling these are some pretty solid, and robust tubes.  Not based on anything scientific, just a gut feeling.  For our sake, I hope I am right!

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ZMA//Zen Ultra//Torii//ZDSD//PS Audio DirectStream DAC + Memory Player + P10//Rachael//Super Zen Triode//Taboo MK III//Muse Phono Stage//London Decca Reference//Dynavector DV-507 MKII//Zen Head//SonoruS Reel-to-Reel w/ tube playback pre-amp//Omega SAHOs//Monoliths
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Posts: 86
Re: Anyone Tube Roll with the ZMA yet?
Reply #339 - 02/20/18 at 02:37:01
 
So how do the Russian 6N5P's sound vs say the Telefunken's or Ediswan's. I get the price, but what about the sound?
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OPPO Sonica DAC
Technics SL-1200M3D Turntable
SoundSmith The Voice cartridge
JRMedia Center running on a MacMini
Oppo 103D for video
Marantz AV8802a Pre
ZTPre & ZMA for Stereo
Rotel RMB-1585 amp
Focal Electra 1038Be speakers (93 db)
2Hsu Research ULS-15 M
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stone_of_tone
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Re: Anyone Tube Roll with the ZMA yet?
Reply #340 - 02/20/18 at 02:56:42
 
Cool Archie, great price too.
Norm, I second that motion....sound comparison.
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Sony as Transport
Illuminati D-60
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Audio Magic Mystic Reference I2S
Audio Alchemy DDE 3.0
Kimber Select 1030
Zen Select #76
Kimber Select 3033
Polk Audio LS-90
Tri-config/TipToes & Vibropods underneath Speakers
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Archie
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Re: Anyone Tube Roll with the ZMA yet?
Reply #341 - 02/20/18 at 17:54:08
 
Buy a set and try them.  If they don't work you can throw them away given the cost.  I like them as well or better than anything I've had in, including the Chinese tubes Steve liked before these.  I figure that if they are good enough for Steve to put in the Torii Jr., they were worth a try.
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Re: Anyone Tube Roll with the ZMA yet?
Reply #342 - 02/20/18 at 18:01:13
 
I ordered four last night  :)

It will be an interesting comparison.
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OPPO Sonica DAC
Technics SL-1200M3D Turntable
SoundSmith The Voice cartridge
JRMedia Center running on a MacMini
Oppo 103D for video
Marantz AV8802a Pre
ZTPre & ZMA for Stereo
Rotel RMB-1585 amp
Focal Electra 1038Be speakers (93 db)
2Hsu Research ULS-15 M
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Lon
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Posts: 13812
Re: Anyone Tube Roll with the ZMA yet?
Reply #343 - 02/20/18 at 18:42:29
 
I've had eight on order a week or two from Russia. Should be an interesting tube to play with.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25, Taboo MkIV;PS Audio: Soloist SE, DMP+DSD, P10, PowerBases, XStream Statemt spk cb, AC-12 power cds; Mapleshade:SamsonV2+V3; Oppo UDP-205;VooDoo Cremona +Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Audeze LCD-2
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Archie
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Re: Anyone Tube Roll with the ZMA yet?
Reply #344 - 02/20/18 at 21:29:04
 
Looking forward to your impressions.  Hopefully yet another tube that performs inversely to price.   Smiley
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Re: Anyone Tube Roll with the ZMA yet?
Reply #345 - 02/20/18 at 22:20:47
 
I see some I can get from an Ukraine seller sovtube. Talk about the need for Steve's 9 pin tube straightener for those!  ;D
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Sony as Transport
Illuminati D-60
Audio Alchemy DTI-Pro
Audio Magic Mystic Reference I2S
Audio Alchemy DDE 3.0
Kimber Select 1030
Zen Select #76
Kimber Select 3033
Polk Audio LS-90
Tri-config/TipToes & Vibropods underneath Speakers
360 degree Rm Treats
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Re: Anyone Tube Roll with the ZMA yet?
Reply #346 - 02/20/18 at 22:25:31
 
My thoughts exactly. I ordered both myself yesterday. Those are new in boxes?
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OPPO Sonica DAC
Technics SL-1200M3D Turntable
SoundSmith The Voice cartridge
JRMedia Center running on a MacMini
Oppo 103D for video
Marantz AV8802a Pre
ZTPre & ZMA for Stereo
Rotel RMB-1585 amp
Focal Electra 1038Be speakers (93 db)
2Hsu Research ULS-15 M
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Archie
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Posts: 869
Re: Anyone Tube Roll with the ZMA yet?
Reply #347 - 02/20/18 at 22:54:46
 
I'm being pig and just ordered 8 more from a Ukraine seller:

https://www.ebay.com/itm/8x-6N5P-Russian-Audiophile-Tubes-double-triode-tubes-Sa...

$22 delivered. †He has one lot of 8 tubes left. †There is an auction for 8 that is cheaper but They didn't specifically say they were Russian tubes, although I think they are:

https://www.ebay.com/itm/6N5P-double-triode-tubes-NOS-same-codes-8-pcs/122974704...


I tacked on a pin straightener to my ZROCK2 order this morning.  It should be shipping this week!
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« Last Edit: 02/20/18 at 22:56:08 by Archie »  
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stone_of_tone
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Re: Anyone Tube Roll with the ZMA yet?
Reply #348 - 02/27/18 at 16:52:57
 
I found my best combo's so far:

Ediswan's or Mullard's as inputs ...with, always the painfully expensive but worth it Telefunken's as inverter's and new stock KT66 Tung-Sol's. .....NOS RCA 0A3's.


My other combination is:

Mullard's ONLY as inputs ...with, always the painfully expensive but worth it Telefunken's as inverter's and Cryo 6P3S-E's. .....NOS RCA 0A3's.


Running straight from ZDSD output trannies.....attenuating input gain with ZMA. Pure and simple/puts me the closest to the Music and the differentiation of Tubes is/are all there.

I keep the original 6N23P's around as a harken back to their Sig....but they ain't my Gig, compared to the above compliments.

The two pair of Tungsrams are going to Audiogon and I'm staying pure with/from my source ZDSD and selling my ARC Line Stage too.



~ All NOS Platinum graded Tubes from Upscale Audio (except 6N23P's):

(Great Britain) Mullard 7308/E188CC ~ †2 pair (both pair Cryogenic)
(Germany) Telefunken 6922/E88CC ~ 1 pair (painfully expensive/worth it)
(US/Great Britain) Ediswan CV2492/6922 ~ 2 pair (one pair Cryogenic)
(Hungary) Tungsram 6922/E88CC ~ 1 pair
(Hungary) Tungsram PCC88/7DJ8 ~ 1 pair

(Russia) 6N23P's ~ 2 pair/came with ZMA. †








Listening Room:



Room Treatments from Michael Green & my Home Brew


Sony as Transport (DVP-NS57P)
Illuminati D-60 Digital Coax IC ~.5 meter


Shunyata Research Zitron Alpha Digital Power Cord to ZDSD {Significant}


Decware ZDSD DAC / Recorder
***************************************************************
W/Steve's Output Transformer's/kicking to the Curb quite a few superb DAC'S
***************************************************************
(@ -20 Ref Level, 0.0 Input volume and @ 16/192)



WBT-0102Ag RCA Kimber Select KS1030 ~.75 meter


Decware Zen Mystery Amplifier
~BIASED at *56* mA~
NOS/Platinum/Mullard E188CC/7308's in my A12 an B12 Input positions Cryogenic~NOS/Platinum/Telefunken 6922/E88CC for Inverter Tubes~NOS RCA 0A3's & matched Quad/Tung-Sol KT66's or 6P3S-E's




***************************************************
Kimber Select KS6063 Speaker Cable 8ft WBT-0681-Ag Spades
***************************************************



Acoustic Zen Adagio - Black Pearl (Modified)
.....enjoying from 8 ohm ZMA Taps


Caintuck Audio Eminence Alpha 15" OB BASS Unit
at 43Hz, with my Velodyne CHT 130 watt plate amp and 0 degree phase.....at 1/8th volume on plate
Plate Amp....regen'd clean ~ plugged into P3
Auralex Subdude (a must)
(NOTE: Only needed when the recording calls for...Open Baffle Bass has been the best integration I have witnessed when needed and called on)







Acoustic Zen Adagio's x-over's Modified/Full Range with Mundorf MCap Supremes-single Cap to each Tweeter/4.5k cross
(Gutted: 3kHz/18dB/Octave, Linkwitz/Riley Crossovers....with all crappy parts = gone)


ZMA, updated with robust Western Electric Bias/Balance Meter's and new Resistor's ~ Feb/17

XLO Pro Power Cord to ZMA
Shunyata Research Zitron Alpha Digital Power Cord to ZDSD {Significant}
PS Audio P3 Power Plant / Pangea AC-9SE from wall to P3
(Transport and ZDSD, Regenerated/*120*~ Multiwave off...ZMA on High Current Output)
System configured on Floor ~ Townshend Audio CD Seismic Sink deployed & other Isolation devices.


† †
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« Last Edit: 02/27/18 at 18:10:55 by stone_of_tone »  

Sony as Transport
Illuminati D-60
Audio Alchemy DTI-Pro
Audio Magic Mystic Reference I2S
Audio Alchemy DDE 3.0
Kimber Select 1030
Zen Select #76
Kimber Select 3033
Polk Audio LS-90
Tri-config/TipToes & Vibropods underneath Speakers
360 degree Rm Treats
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NormD
Senior Member
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Posts: 86
Re: Anyone Tube Roll with the ZMA yet?
Reply #349 - 02/27/18 at 19:02:31
 
Would you care to compare the KT66ís to the 6P3Sís?  I found the KT66ís to be substantially stronger in bass but not as clear and crisp in the mids and highs. Maybe I need to give them more air time.
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OPPO Sonica DAC
Technics SL-1200M3D Turntable
SoundSmith The Voice cartridge
JRMedia Center running on a MacMini
Oppo 103D for video
Marantz AV8802a Pre
ZTPre & ZMA for Stereo
Rotel RMB-1585 amp
Focal Electra 1038Be speakers (93 db)
2Hsu Research ULS-15 M
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