WTB 1955 CBS Hytrons Tubes

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mcullinan

WTB 1955 CBS Hytrons Tubes
« on: 27 Jun 2007, 02:10 pm »
Anyone? I couldnt find them anywhere.
Mike

toobluvr

Re: WTB 1955 CBS Hytrons Tubes
« Reply #1 on: 27 Jun 2007, 02:33 pm »
Anyone? I couldnt find them anywhere.
Mike


What type?
12au7?

mcullinan

Re: WTB 1955 CBS Hytrons Tubes
« Reply #2 on: 27 Jun 2007, 02:44 pm »
ooooooooooops..
Yes. 12AU7.
Mike

toobluvr

Re: WTB 1955 CBS Hytrons Tubes
« Reply #3 on: 27 Jun 2007, 02:54 pm »
ooooooooooops..
Yes. 12AU7.
Mike

Not sure if they are exactly 1955, but I got some CBS Hytron black plates, circa mid-to-late 50's, and man are they liquid and sweet!  Some of the finest I have ever heard of that family!

mcullinan

Re: WTB 1955 CBS Hytrons Tubes
« Reply #4 on: 27 Jun 2007, 03:07 pm »
Are you saying you have an extra set lying around :)
Mike

toobluvr

Re: WTB 1955 CBS Hytrons Tubes
« Reply #5 on: 27 Jun 2007, 03:16 pm »
Are you saying you have an extra set lying around :)
Mike


 :rotflmao:

Naw...just one pair....and they got some hours on them.
Sorry Mike!     

carusoracer

Re: WTB 1955 CBS Hytrons Tubes
« Reply #6 on: 27 Jun 2007, 04:58 pm »
ooooooooooops..
Yes. 12AU7.
Mike

Try 55' Raytheon Black Plate,Sq Getter, Lettering Triple mica aa
Easier to find and one heck of a good sounding tube.

Lkdog

Re: WTB 1955 CBS Hytrons Tubes
« Reply #7 on: 27 Jun 2007, 08:16 pm »
mcullinan--

I think you may be seeking the CBS-Hytron 5814wa tube, not 12Au7.
I think they are different tubes.
The 5814 is generally considered the desirable CBS-Hytron 12au7 variant to get.

Someone may correct me here.

Check Ebay. They do show up fairly regularly for about $40 a pair or so for very good used or NOS.

I use a pair in my Audio Mirror PP1 and enjoy them a lot.

If they are early 50's they may be Hytron 5814's
If they are mid fifties they are usually CBS-Hytron 5814's.
If they are late 50's they are usually labled CBS 5814.

Allegedly they all sound the same.
Allegedly the Raytheon double mica 1950's black plate is rumored to be maybe the same tube by some accounts.
I have a 1957 pair of these and I am not sure I could distinguish the two in my setup if blindfolded.

As noted-maybe a 1950's Raytheon black plate 5814 can be found easier.

Good luck.

toobluvr

Re: WTB 1955 CBS Hytrons Tubes
« Reply #8 on: 27 Jun 2007, 09:40 pm »
mcullinan--

I think you may be seeking the CBS-Hytron 5814wa tube, not 12Au7.
I think they are different tubes.
The 5814 is generally considered the desirable CBS-Hytron 12au7 variant to get.

Someone may correct me here.

Check Ebay. They do show up fairly regularly for about $40 a pair or so for very good used or NOS.

I use a pair in my Audio Mirror PP1 and enjoy them a lot.

If they are early 50's they may be Hytron 5814's
If they are mid fifties they are usually CBS-Hytron 5814's.
If they are late 50's they are usually labled CBS 5814.

Allegedly they all sound the same.
Allegedly the Raytheon double mica 1950's black plate is rumored to be maybe the same tube by some accounts.
I have a 1957 pair of these and I am not sure I could distinguish the two in my setup if blindfolded.

As noted-maybe a 1950's Raytheon black plate 5814 can be found easier.

Good luck.

I do believe LKdog is correct in his summary of the various designations.  At least, that is what I remember when researching these several years ago.

I actually have the CBS-Hytron 5814A, not the 12au7 as I stated earlier.  It has black ladder plates, double mica, D getter.  Red print on glass is: 

JHY 5814A
CBS - HYTRON
Made IN USA

Not 100% sure of the exact date, but apparently, mid-50's.  I got my NOS pair over 5 years ago from MachMat.com for $65.  Very nice sounding tube.  I would describe it as rich and musical, with good tone and nice mids.

Sorry for the small and blurry pic...best I could do.












bunky

Re: WTB 1955 CBS Hytrons Tubes
« Reply #9 on: 27 Jun 2007, 10:05 pm »
I have a NOS pair of the CBS/Hytron 5814 wa made in 1955 that i bought from a friend of mine who lives near Atlanta. he sent another pair to a guy on another forum who uses a Candela but this guy says he cant tell the difference between the 5814's and the stock JJ Tesla's. i will see if he is willing to sell them to you if you are interested.thanks....WCW III

mcullinan

Re: WTB 1955 CBS Hytrons Tubes
« Reply #10 on: 27 Jun 2007, 10:29 pm »
OK.... Thanks for all your help guys.
Mike aa

Lkdog

Re: WTB 1955 CBS Hytrons Tubes
« Reply #11 on: 28 Jun 2007, 01:51 am »
http://cgi.ebay.com/5814-PREMIUM-12AU7-CBS-HYTRON-BLK-PLATE-TUBE-AMPLIFIER_W0QQitemZ170126022623QQihZ007QQcategoryZ67807QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Here is new listing on Ebay. This vendor is reputable.
I have bought from them before.
These appear to be the late 50's model.
Appear used, but close to new testing.

Walden-Puddle does not test for noise, and do not list their return policy so you may wish to ask, but
I believe if there is a problem you get refund or exchange.
I have not heard anyone having issues with them.

This is an OK price at Buy it Now.
Many folks feel this is one of best tubes of 12au7 family.