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Help identifying Shindo nos tubes for Montrachet

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Posted on February 6, 2017 at 04:46:08
montaldo
Audiophile

Posts: 35
Location: Midwest
Joined: November 6, 2013




I hoped someone with more knowledge of tube structure could help me positively identify an unused set of nos Shindo-provided el34 output tubes. I always thought they were Philips but need to confirm that and any other information that might be important to a buyer. I sold my Montrachet amp and therefore want to list these tubes for sale.

Also, any suggested asking price for the entire tube set of four el34 and four input tubes pictured (2 GE 6EJ7 and 2 6aw8a)? I asked a dealer and he didn't even know what a new set like this cost.

Thanks in advance for your help!

Stu

 

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RE: Help identifying Shindo nos tubes for Montrachet, posted on February 6, 2017 at 07:24:52
FenderLover
Bored Member

Posts: 12336
Joined: July 31, 2007
Contributor
  Since:
May 17, 2009

Kinda reminds me of vintage RFT EL34 tubes. These are good tubes.

BTW... one is not NOS. It has some mileage on it. Tell by blast coming out of rectangular holes on anode plate --- putting smoke-like stain onto inner glass.

 

RE: Help identifying Shindo nos tubes for Montrachet, posted on February 6, 2017 at 09:38:16
Nunki
Audiophile

Posts: 324
Joined: November 27, 2010
check the bulb`s top! if you find a dimple in the center there it is obviously made by RFT. the "dimple top" is typical for RFT EL34. that perfect cylindric shape of the bulb also.

N.


"How the fuck did our oil come under their sand?"

 

RE: Help identifying Shindo nos tubes for Montrachet, posted on February 6, 2017 at 10:47:26
h00hbt
Audiophile

Posts: 463
Location: Sweet spot
Joined: July 8, 2007
They look like RFT EL34

 

RE: Help identifying Shindo nos tubes for Montrachet, posted on February 7, 2017 at 09:19:15
6bq5
Manufacturer

Posts: 2160
Location: SF Bay
Joined: August 16, 2001
Contributor
  Since:
September 14, 2012
Stu,
These appear to be Siemens EL-34s, and be prepared to spend at least $100.00 each for NOS tubes-
Please note- as another has pointed out- the second tube from the left is NOT NEW - the shading on the glass indicated use - substantial use-

The driver tubes are not common- and could cost anywhere from $10-$60 each-

Happy Listening

 

RE: Help identifying Shindo nos tubes for Montrachet, posted on February 7, 2017 at 10:52:13
h00hbt
Audiophile

Posts: 463
Location: Sweet spot
Joined: July 8, 2007
RFT made tubes for Siemens......

 

RE: Help identifying Shindo nos tubes for Montrachet, posted on February 7, 2017 at 13:21:45
2con
Audiophile

Posts: 62
Location: lombardia
Joined: February 12, 2003

Rft tubes ,sometimes Tfk marked ,sometimes Siemens.

Value depends on how they are matched (and i don't think they

are unused tubes),and how consitent they are .

I won't pay more than 50 bucks each for unmarked ,unboxed tubes

(if they test strong and well matched)

 

RE: Help identifying Shindo nos tubes for Montrachet, posted on February 19, 2017 at 20:14:00
montaldo
Audiophile

Posts: 35
Location: Midwest
Joined: November 6, 2013
Thanks for all the input. Another knowledgeable friend agreed with the opinions here. RTF they are. I had them tested on a B&K dyna-jet tester and they are all good. The one that briefly lit up in the Music Reference RM-9 amp before it's tube fuse blew is just as strong as the others (90), despite what that 1 second did to its appearance. No shorts in any of them.

Given that these are Shindo-supplied tubes, am I right that they were carefully selected and matched? I hear all kinds of things about Shindo's selectivity. Does this impact their value? I imagine the discoloration in the one tube will hurt the value a bit, on the other hand.

So should I ask $50-75 each or is that too low? Unfortunately I paid $500 three months ago for this set, including the input tubes that are probably not worth much.

Thanks,
stu
Stu

 

RE: Help identifying Shindo nos tubes for Montrachet, posted on February 20, 2017 at 14:16:31
6bq5
Manufacturer

Posts: 2160
Location: SF Bay
Joined: August 16, 2001
Contributor
  Since:
September 14, 2012
That it blew A fuse in an RM-9 is not a critical problem - the fuse was installed for two reasons: 1: to protect the amp from a run-away bias, and 2: to deal with 'Lint Shorts' where a piece of lint or other gets caught between the screens or plate and screen of a power tube .
This is more common among some tubes than others- though I have had my fair share w/ Siemens tubes in RM-9s...

They are wonderful tubes, and I keep at least one spare set for my amp.....
Happy Listening

 

RE: Help identifying Shindo nos tubes for Montrachet, posted on February 26, 2017 at 08:46:41
Nunki
Audiophile

Posts: 324
Joined: November 27, 2010
50-75 bucks for each is not a reasonable price! on e-pay (europe/germany) you would find good used quads for 120-150 € or US$. shindo´s RFTs can not be wonder tubes. he has/had to take from old stock as any other vendor too.

the RFT EL34 is known as a great tube which can safely take high anode voltage giving a neutral, tight, "rocky" sound and good midrange. highly recommended among guitar players but meanwhile among audio enthusiats also. my experience is that the solution compared to mullards is lacking a little. but just a little...

N.




"How the fuck did our oil come under their sand?"

 

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