[adrianc]

Hi Guy, I bought this rack from Poland just for the Cat Pre as it weight 64 lbs,sigh.

[hiradi]

Hi hiradi.
May an ignorant like me ask:
Other than more power,
what are the other advantages of using those monster tubes ???
...and for the same price, may I ask how much power you get from those tubes?
Are they SET ?
May I know, if not a military secret,
by how much one tube will make you poorer ?
Thanks in advance for your answers
and if you decide not to answer, thanks anyway for posting
those beautiful twin glass monsters.

Guy 13
I've seen quite of few of those tubes here on planet Vietnam.
The Vietnamese audiophile like those tubes, because it impress
the audiophile friends...
By the way, your rack must be under great stress with
that monster of amplifier on his back.

Hi Guy 13,
the Kronzilla was in my system some 12 years ago and as I am on Solar Power , I had to made some changes ...
the tubes always have been expensive , but I have no idea how much they are today, at the time $2K a pair...I was visiting KR Audio in Prague and luckily did see them being manufactured...a very impressive process and very labour intensive...
the amplifier was very neutral for a SET amp and very powerful with 35 watt...not at all your typical tube amplifier...
the rack was a temporary set up ... it was always my aim to find more neutral components and now after all those years it's a RWA Signature 16 amp with a nice NOS Siemens CCA tube , driving a 99db Horn Speaker...quite a difference in size...no need to impress anyone here

[shoot]

My Mullard ECC82 Black Plate

do you ever saw 1956's blackburn made this kind ecc82?

[adrianc]

do you ever saw 1956's blackburn made this kind ecc82?

No

[shoot]

No

I saw some one posted a picture in a hifi BBS,brandnew.code number is k61 B6B,I guess it maybe from a profiteer who remarked the code and lable for high price.but didn't know mullard only made that kind tube in 1953.

[adrianc]

I saw some one posted a picture in a hifi BBS,brandnew.code number is k61 B6B,I guess it maybe from a profiteer who remarked the code and lable for high price.but didn't know mullard only made that kind tube in 1953.

As far as I know, black plate version only available on 1593 date code,some later grey plate 1593 J3 version ECC82.

 

[adrianc]

J3

[adrianc]

K61 B6D grey plate

[adrianc]

Brimar square getter ECC83 and ECC82 with Osram , GEC stikers

[shoot]

Brimar square getter ECC83 and ECC82 with Osram , GEC stikers

black or grey plates?

[adrianc]

Black on 12AX7, Grey on 12AU7

[shoot]

Black on 12AX7, Grey on 12AU7

RGN1064?

[adrianc]

It's a Type 80

[sebrof]

Sophia 2A3 Meshplates

[Guy 13]

Sophia 2A3 Meshplates

Hi sebrof.
If you can see the filament thru the plate, what is the meshplates made of?
What would be the main advantage to use that kind of design.
Does Sophia make other model of tubes, like the 300B or other?

Guy 13

[sebrof]

Hi sebrof.
If you can see the filament thru the plate, what is the meshplates made of?
What would be the main advantage to use that kind of design.
Does Sophia make other model of tubes, like the 300B or other?

Guy 13

Hello Guy
The mesh plate is actually technically a misnomer - The Sophias are actually perf plates / perforated plates. My understanding is that true meshplates are made of a wire mesh, and perf plates like the Sophias are solid plates with holes punched in them. The mesh plates are much more expensive to manufacture.

I like the Sophias, but how much of the sound is a function of the plates I do not know.

Sophia does indeed make 300bs with perforated plates.

Emission Labs makes mesh plates and will tell you why they are the best, although who knows if they're accurate: http://www.emissionlabs.com/html/products/Warning-Chinese-Fake-mesh.htm

[sebrof]

Emission Labs makes mesh plates and will tell you why they are the best, although who knows if they're accurate: http://www.emissionlabs.com/html/products/Warning-Chinese-Fake-mesh.htm

Well after I actually read the EML web page I realized they didn't say mesh plates were better. That's what I get for assuming.

I could not edit my previous post I assume because this thread is in quarantine.

[SCompRacer]

5y3wgt rectifier.



An attempt an an artsy Conrad Johnson pre shot.



TAD 1000 mono block.

[SCompRacer]

MU6900. (MU Engineering bought out the Bendix Redbank division. They rebranded old stock and continued to manufacture with Bendix machinery).




6EM7

[Redboy]

Globe 46