In my experience all tubes make a difference in every Deware amp or preamp I've owned. I can distinctly hear the differences in power tubes. Just saying. I liked the Tung-Sol the least of the three I've tried in my Torii Mk IIIs and Mk II. Different amps, yes. But my mileage. Others vary.

In my post from yesterday I said Gold Lion but meant to say Genalex.

Nobody is "peeing on the tree," just offering advice on a great power tube imo, one I've preferred after using two other brands, both of whom had one fail on me early as well. I'd have a ZMA if I wanted one, I don't want one. But my guess is the TAD tubes would shine in the ZMA. I was offering that advice to Eric, not you.

Happy new year. We're going out to dinner and then staying in and have some sober fun.

What's simple is that you have no authority over what I post, this year or next.

~Bloviating~







Listening Room:



Room Treatments from Michael Green & Home Brew

Sony as Transport (DVP-NS57P)/Sandwich weighted for Isolation

Illuminati D-60 Digital Coax IC


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)
{also @ kept/-20 Ref Level & -.5db Input volume Level}


WBT-0102Ag RCA Kimber Select KS1030

Decware CSP3 w/Jupiter Caps
(NOS/Platinum/Telefunken 6922/E88CC for Input Tube~6N1P-EV's for Output Tubes & 5U4G-C Rectifier)
****************************************************
10 of 10 for Input tube & 8 of 10 voltage for Output tubes
Volume adjustment usage at 25% to 45% of usable volume
****************************************************

WBT-0102Ag RCA Kimber Select KS1030

Decware Zen Mystery Amplifier
(NOS/Platinum/Ediswan's CV2492/6922 in my A12 an B12 positions~6N23P-EV's for Inverter Tubes~JAN Sylvania 0A3's & Tung-Sol KT66's)
ZMA adjusted at 25% to 35% of usable volume

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

Acoustic Zen Adagio - Black Pearl (Modified)




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)

***************************************************************************
XLO Pro Power Cords to CSP3 an ZMA
All four pieces of Gear running from an: ADCOM ACE - 515 AC enhancer

~OR~

PS Audio P3 Power Plant / Pangea AC-9SE from wall to P3
(Transport, ZDSD an CSP3, Regenerated/120 ~ Multiwave off...ZMA on High Current Output)
***************************************************************************

PS=the: NOS/Platinum/Ediswan's CV2492/6922 /Inputs = ZMA are breathtaking.............. .
Also: Cryoset 6N23N-EB's, rotated in and out of Inputs/ZMA

NOS/Platinum/Telefunken 6922/E88CC for Input Tube/CSP3 ~ not taken for granted neither......... .

Once again, IF you don't own it ~ don't comment on its Tube Fidelity.

Interesting. I ordered a quad. They're matched I assume? I hope.

Just ordered another quad of the 6P3S-E.  I also considered the TAD KT66 but these are about a third the price and are good for me now.

LR, did you get a new Quad? What are you biasing at (these days)?

I was using 52 mA for the longest time. I just went back to 60 mA! So much better for my Ediswan Input tubes. Better for the 0A3's and the Inverter tubes too with these Edi's. Transients are total killer now!

Torii III weenies don't get to customize their Input Tubes!

That was fun to say!  
Especially when Torii weenies insist on commenting about tube rolling in an Amp (ZMA).....they don't have/own.....ANY EXPERIENCE WITH. But, some people are Legends in there own minds!


INSIGHT - The two small 9 pin tubes (6N23P) that make up the input stage and
phase inverter are used to drive the output stage. These tubes have an effect on
the overall matching of a given pair of output tubes. That means you can have a
perfectly matched pair and an odd or misbehaving 6N23P could cause the tubes to
be off sightly. Of course with the Mystery Amp you can simply compensate with the
ingenious balance control.

....and since I tube roll:

NOS/Platinum/Ediswan's CV2492/6922 /Inputs = ZMA

Also: Cryoset 6N23N-EB's, rotated in and out of Inputs/ZMA

....so critical to balance.....and have the option to bias at: 50, 52, 54, 56, 58 or 60 mA.
(working "the" between the hashes, from 48 on up with subtlety).

Interestingly cryoset.com is now offering these Reflector 6P3S-E, and at about the same price as the foreign seller I bought a quad from. So I ordered some from cryoset as well. . . we'll see which comes first!

INSIGHT - The two small 9 pin tubes (6N23P) that make up the input stage and
phase inverter are used to drive the output stage. These tubes have an effect on
the overall matching of a given pair of output tubes. That means you can have a
perfectly matched pair and an odd or misbehaving 6N23P could cause the tubes to
be off sightly. Of course with the Mystery Amp you can simply compensate with the
ingenious balance control.

....and since I tube roll:

NOS/Platinum/Ediswan's CV2492/6922 /Inputs = ZMA

Also: Cryoset 6H23N-EB's, rotated in and out of Inputs/ZMA

....so critical to balance.....and have the option to bias at: 50, 52, 54, 56, 58 or 60 mA.
(working "the" between the hashes, from 48 on up with subtlety).

Torii III? We eat Torii III's for lunch on this Thread. You must be lost? Or, confused?!    ;D  ;D  ;D  ;D


Further sonic pleasure improvements (Zen Mystery Amp & CSP3) have been Tube Rolling:

NOS/Platinum/Ediswan's CV2492/6922 /Inputs = ZMA are breathtaking.............. .

*Also: Cryoset 6H23N-EB's, rotated in and out of Inputs/ZMA*
(Way different internal guts/halo/getter...they are NOT 6N23P-EV's)

NOS/Platinum/Telefunken 6922/E88CC for Input Tube/CSP3 ~ not taken for granted neither......... .

NOS/Platinum/Ediswan's CV2492/6922 /PRE Outputs of CSP3, running  into ZMA Inputs with Ediswan's = revelatory!  



Furthermore, customizing my Acoustic Zen Adagio's:

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)
...........................Revelatory!

Especially when the Adagio Drivers are equipped with underhung voice coils and Neodymium magnets – a short voice coil in a long magnetic gap allows to eliminates most of the distortions and coloration.

......then with the Transmission Lines.....magnificent overacheivers!





PS: Goals in 2016/for my System:

1) Three more choice/select/NOS/Platinum pairs of 6922's from Upscale Audio.

2) I'm bringing in a PASS LABS XA 30.8 (used/demo/seasoned in), to challenge my Zen Mystery Amp. Yes, the XA 30.8.....not the XA 30.5.
(I'll probably end up keeping the 30.8 & the ZMA will be going nowhere~it stays/period).

3) Kimber Internal Silver wire or Duelund, inside Adagio's...and Upgrade Caps to Mundorf Silver Oils.








Listening Room:


Room Treatments from Michael Green & Home Brew

Sony as Transport (DVP-NS57P)/Sandwich weighted for Isolation

Illuminati D-60 Digital Coax IC

Shunyata Research Ztron Alpha Digital Power Cord to ZDSD!

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

Decware CSP3 w/Jupiter Caps
(NOS/Platinum/Telefunken 6922/E88CC for Input Tube~NOS Platinum Ediswan Cryogenic 6922's for Output Tubes & 5U4G-C Rectifier)
****************************************************
10 of 10 for Input tube & *9* of 10 voltage for Output tubes
Volume adjustment usage at 25% to 55% from 0
****************************************************

WBT-0102Ag RCA Kimber Select KS1030

Decware Zen Mystery Amplifier
~BIASED at *60* mA~
(NOS/Platinum/Ediswan's CV2492/6922 in my A12 an B12 positions~6N23P-EV's for Inverter Tubes~JAN Sylvania 0A3's & Tung-Sol KT66's)
ZMA adjusted at 20% to 30% from 0

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

Acoustic Zen Adagio - Black Pearl (Modified)




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)


XLO Pro Power Cords to CSP3 an ZMA
PS Audio P3 Power Plant / Pangea AC-9SE from wall to P3
(Transport, ZDSD an CSP3, Regenerated/*122*~ Multiwave off...ZMA on High Current Output)
***************************************************************************

PS: NOS/Platinum/Ediswan's CV2492/6922 /Inputs = ZMA are breathtaking.............. .

*Also: Cryoset 6H23N-EB's, rotated in and out of Inputs/ZMA*
(Way different internal guts/halo/getter...they are NOT 6N23P-EV's)

NOS/Platinum/Telefunken 6922/E88CC for Input Tube/CSP3 ~ not taken for granted neither......... .

NOS/Platinum/Ediswan's CV2492/6922 /PRE Outputs of CSP3, running  into ZMA Inputs with Ediswan's = revelatory!

Ummm....lost & confused.....as I suspected.  

I treat the 50 mA bias as more of a target and set bias more to the tube.  The original recommendation was 60 mA.  I bias my Gold Lion KT66s at 56 mA which is a bit higher than their minimum.  I think higher bias may cause the output transformers to run hotter but mine are still way below the 140 degrees Steve said was the design run point.

One of my original Tung-Sols is funky and takes a long time to settle so I don't use them.  I don't feel like I got near the life from that Tung-Sol tube that I should have.  I really like the 6P3S-Es from Russia but I had a problem with one or two from the last quad I bought.  After running fine for weeks, I left my house for an hour and when I came back there was a very loud and awful sound coming form my speakers and the left channel meters were pegged at the top.  After powering down and back up everything seemed fine but the left tubes started acting up several days later with the meters jumping and bad sounds coming from the left speaker.  Steve told me that they would be bad when I conferred with him over the original incident.

When cash flow improves I think I'll try the TAD KT66s from Cryoset.

Oh yeah, getting the original quad/sent with my ZMA out after 22 months this past November....they were noisey from the start.
My new quad of KT66 Tung-Sol are quiet and awesome.

Yes, I just made the Inverter Tubes a priority. I have a pair of Cryoset Cry'ode 6H23N-EB's in. ....see my complete tubes below.

After 25 months and 2500 hours on the originals from Steve....they were slow!  Anyone out there thinking it's your Input tubes being slow on your ZMA...it might be and probably is your Phase Inverter tubes. ....and yes, with only 2500 hours on them. Being a UL Amp...I drive it hard and Listen to it at 86 to 94db SPL's....you won't get 4500 hours out of the Inverters....only about 2500.  

Chranwood, I have some Mullards, Bels coming for Input and Output.....LOVING MY EDISWANS!!!!

I should get the Telefunken E88CC .....for Inverters too!





Listening Room:


Room Treatments from Michael Green & Home Brew

Sony as Transport (DVP-NS57P)/Sandwich weighted for Isolation

Illuminati D-60 Digital Coax IC

Shunyata Research Ztron Alpha Digital Power Cord to ZDSD!

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

Decware CSP3 w/Jupiter Caps
(NOS/Platinum/Telefunken 6922/E88CC for Input Tube~NOS Platinum Ediswan Cryogenic 6922's for Output Tubes & 5U4G-C Rectifier)
****************************************************
10 of 10 for Input tube & *9* of 10 voltage for Output tubes
Volume adjustment usage at 25% to 55% from 0
****************************************************

WBT-0102Ag RCA Kimber Select KS1030

Decware Zen Mystery Amplifier
~BIASED at *60* mA~
(NOS/Platinum/Ediswan's CV2492/6922 in my A12 an B12 positions~Cryoset 6H23N-EB's for Inverter Tubes~JAN Sylvania 0A3's & New Quad of Tube Depot Stealth/Tung-Sol KT66's)
ZMA adjusted at 10%, 15% to 25% max, from 0

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

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




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)


XLO Pro Power Cords to CSP3 an ZMA
PS Audio P3 Power Plant / Pangea AC-9SE from wall to P3
(Transport, ZDSD an CSP3, Regenerated/*122*~ Multiwave off...ZMA on High Current Output)
***************************************************************************

PS: NOS/Platinum/Ediswan's CV2492/6922 /Inputs = ZMA are breathtaking.............. .

*Also: Cryoset 6H23N-EB's, rotated in and out of Inputs/ZMA*
(Way different internal guts/halo/getter...they are NOT 6N23P-EV's)

NOS/Platinum/Telefunken 6922/E88CC for Input Tube/CSP3 ~ not taken for granted neither......... .

NOS/Platinum/Ediswan's CV2492/6922 /PRE Outputs of CSP3, running  into ZMA Inputs with Ediswan's = revelatory!

I'm going to have to temper my last post in regards to the Siemans E88CC as phase-splitter, simply put it's not in the Telefunken E88CC's league. I'm now running with Telefunken E88CC's for both input and phase-splitter and it's a case of "You don't know what you've got until it's gone". In this instance, a bit of looseness in the bass and a little clouding in the mid-range.
I'm not sure how much is due to running matched tubes in both positions, and how much is due to the Telefunken E88CC's abilities as a phase-splitter. It should be noted that the Telefunken also worked very well with the Siemans as the input tube. The issue I had with the Siemans was that I found it emphasised the treble a little too much. But that view may change once I install some acoustic panesl in my listening room. The room is pretty bare at the moment. It's a testament to the ERRx that the system sounds as good as it does.

Charn', I believe you. I am going to go for another pair (ouch), of the Telefunken E88CC/6922's......for my phase splitter's.





Listening Room:


Room Treatments from Michael Green & Home Brew

Sony as Transport (DVP-NS57P)/Sandwich weighted for Isolation

Illuminati D-60 Digital Coax IC

Shunyata Research Ztron Alpha Digital Power Cord to ZDSD!

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


Decware Zen Mystery Amplifier
~BIASED at *60* mA~
(NOS/Platinum/Telefunken E88CC/6922 in my A12 an B12 positions~Cryoset 6H23N-EB's for Inverter Tubes~JAN Sylvania 0A3's & New Quad of Tube Depot Stealth/Tung-Sol KT66's)


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

Acoustic Zen Adagio - Black Pearl (Modified)


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)


XLO Pro Power Cord to ZMA
PS Audio P3 Power Plant / Pangea AC-9SE from wall to P3
(Transport, ZDSD are Regenerated/*122*~ Multiwave off...ZMA on High Current Output)
***************************************************************************

Yes, the Telefunken E88CC's as phase-splitters with my Ediswan's for Inputs. Kevin is going to continue to raise the price on the Tele's....so I'm biting the bullet now.

E88CC phase-splitters with my other/current pair of E88CC's and Ediswan rotation for Inputs = MAGIC. I have two pair of the Edi's.

It seems to be a while since this topic has been active, so I thought I'd ask for some current opinions. I'm running my year-old ZMA with a ZTPre and I love the sound. But we are always looking for a little more, no?

So I swapped out the stock 6N1P's with the National 7DJ8's in A12 and B12 and the sound stage and midrange have opened up considerably. I'm very happy.  Reading through this thread, there are favorable reviews about the Ediswans CV2492's and the Telefunken E88CC. The Ediswans are no longer on the Upscale site and we all know the Telefunken's are pricy.

Are folks still happy with the Telefunkens over the Nationals?  Other recommendations?

Hi Norm....here is my gig....the last couple years now. I go without other things, so I can afford my NOS Plat' tubes.  :D  I can't go back to low power from my ZMA and I can't go back to less than these tubes I'm running below..... . I put the Russian tubes in to remind me of the original signature and will probably sell the Tung' 6922's ~ NOT the Tung' 7DJ8's....they are the perfect yang to my ying Mullard in my Audio Research LS-2B MkII.


Probably, trying these Siemens next. Easy resale on Audiogon...if they don't work out for me....... .
https://www.upscaleaudio.com/collections/preamp-tubes/products/siemens-a-frame-e...
.....might be an even better yang, in my ZMA as inputs.....with my Mullard in my ARC Line Stage.

NOS/Platinum/Telefunken 6922/E88CC for Inverter Tubes~NOS RCA 0A3's & matched new production Quad/Tung-Sol KT66's

I don't like the Tele's as inputs....but live by them for inverter's.

https://www.upscaleaudio.com/collections/preamp-tubes/products/telefunken-e88cc-...


.......here is my order of Listening (keeping each scenario in one to two weeks at a time):

ZMA direct from ZDSD with Ediswan pair (Cryo'd) CV2492/6922 ....as inputs/ZMA

ZMA direct from ZDSD with Mullard pair (Cryo'd) 7308/E188CC ....as inputs/ZMA

ARC LS-2B/single Mullard 7308/E188CC (Cryo'd) to Tungsram pair PCC88/7DJ8 ...inputs/ZMA

.....I have my best pair of Cryogenic Ediswans in right now/direct as above mentioned....Heaven.


~NOS Platinum Tubes from Upscale Audio/Kevin:

(Great Britain) Mullard 7308/E188CC ~  2 pair (both pair Cryogenic)
(Germany) Telefunken 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.

From Cryoset:
(Russia) 6N23N/P-EB ~ 2 pair

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

Norm, I am not a big fan of the Matsu Nationals. I would try the Tungsram PCC88's ....I love. However, .....all subjective...maybe I have a shitty pair of the Matsu's?

For me, other than receiving my ZROCK2 and hearing if it works (for me/certain genre's/recordings).....? I have tricked out my Listening Room System to the point...tube rolling is now my option and I enjoy it/but, not much more out there for me to roll/no complaints. Done rolling Speaker's now....nothing has beat my modified Adagio's with their underhung gig/German made (to Mr. Lee's spec's) with Mundorf MCap Supremes/gutted original x-over's.....and the Adagio Tweeter's.......the Swan's Tweeter's can't compete.....end of story.

Far as Ediswans go....they pop up on the Agon' tube section. Just Vet them well. The killer expensive Telefunken's are worth it for Inverter's and the next 10,000 hours (yes think about it.....pennies per use).

Unfortunately, Kevin's Tubes are supply and demand...but worth it to me.....to get the most out of my ZMA. Some people can't hear the difference I suppose....but in my Rig and Cabling.....I sure hear the difference.







.......here is my order of Listening (keeping each scenario in one to two weeks at a time):

ZMA direct from ZDSD with Ediswan pair (Cryo'd) CV2492/6922 ....as inputs/ZMA

ZMA direct from ZDSD with Mullard pair (Cryo'd) 7308/E188CC ....as inputs/ZMA

ARC LS-2B/single Mullard 7308/E188CC (Cryo'd) to Tungsram pair PCC88/7DJ8 ...inputs/ZMA.


.....currently running with ZDSD direct to ZMA (no Line Stage)....with Cryogenic Ediswan pair for inputs in my ZMA. All else (below) equal/in System.


Previous Decware Amplifier's/I have owned/Purchased new: SE84CS (#76 Zen Select/you see in my original Signature below/I used for 13 years/2001 till 2014), Torii MkIII & SuperZen CKC.





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 RCA Kimber Select KS1030 ~.5 meter


Audio Research Stereo Line Stage Amplifier w/remote volume & mute LS-2B MkII
NOS Platinum/Mullard 7308/E188CC / Cryogenic


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


currently.....NOS Platinum Tungsram PCC88/7DJ8 ~ 1 pair....in for Inputs/ZMA

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 E88CC for Inverter Tubes~NOS RCA 0A3's & matched Quad/Tung-Sol KT66's

ZMA adjusted at  60-90% Gain ~ w/ARC Line Stage, running via Remote Control



***************************************************
Kimber Select KS6063 Speaker Cable 8ft WBT-0681-Ag Spades
***************************************************
Kimber 8TC new/white & clear jacket/to remind me of how fluid/timbre correct and good the KS6063 are
Also Read.....the lowest noise floor you will ever witness....that a $5180 pair of speaker cables should have....and they do.....(I was fortunate to get them for $2680/Demo pair/mint, from the CableCo....worth every penny/extraordinary realism.....)



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


Caintuck Audio Eminence Alpha 15" OB BASS Unit
at 53Hz, with my Velodyne CHT 130 watt plate amp and 0 degree phase.....at 1/6 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)


XLO Pro Power Cord to ZMA
PS Audio P3 Power Plant / Pangea AC-9SE from wall to P3
(Transport, ARC Pre, and ZDSD, Regenerated/*120*~ Multiwave off...ZMA on High Current Output).


~NOS Platinum Tubes from Upscale Audio/Kevin:

(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.

From Cryoset:
(Russia) 6N23N/P-EB ~ 2 pair

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

Matched/NOS/Platinum/Mullard E188CC/7308's/Cryogenic in my A12 an B12 Input positions/ZMA

.........have taken over the lead!

.....these are breath taking tubes in the ZMA..... .


Matched/NOS/Platinum/Telefunken 6922/E88CC for Inverter Tubes~NOS RCA 0A3's & matched Quad/Tung-Sol KT66's.

Hi Norm. Yeah, I'm addicted to these Mullards.
Running one in my Audio Research Line Stage today, with Tungsrams for inputs/ZMA.....ohhh, so good!

My two pair of Mulls are from Upscale......Platinum Cryo'd.
https://www.upscaleaudio.com/collections/vacuum-tubes/products/mullard-e188cc-73...

The French OEM'd from Mullard.....are here:
http://www.thetubestore.com/Tubes/6922-E88CC-Tube-Types/Mullard-E188CC-7308

....couple others out there have them too.

....and yes, spot on description of the Ediswans....they will always find their way back in my ZMA. However, the little the Mulls give up in the bass....they all so make up for it in the midrange thru treble. + the hit I get out of them, from my ARC Line Stage......is so good...... . I also fly them solo as a pair in my ZMA inputs....ZDSD running them direct.

Jeff,

I can't give you pages of prose about tube subtleties but for the last several years I've been using various quads of coin based 6PS3-E tubes in my ZMA  I also have a quad of Tug-Sol EL34s that I've used.  I have Tug-Sol and Gold Lion KT66s too but everytime I put them in I end up taking them out after a couple days.  While the EL34s are similar to the 6PS3-Es (and take advantage of the Hazen Grid mod) I always go back to the 6PS3-E.  To me they just have a "sweeter" sound.  Plus, they are very affordable.  Try a quad:  [urlhttp://www.cryoset.com/catalog/index.php?cPath=22_80&osCsid=16425415cc2f68a993098e61e59a93bd][/url]