2. amps-preamps
  3. 193054-123090

Reliable Dealer for 6CS7 tubes

I know this is a well worn and exhausted discussion regarding Leben cs 600 pre- amplifier tubes.  But, I thought I would share my experience searching for this scarce tube.  I have been able to find what I thought were two matched quads from two ebay dealers/sellers.  I sent them to Western Glow Tube Services ( highly recommend BTW) to be tested.  Out of 8 tubes, one was defective and only one "fairly good" quad was identified.  I don't recall where I purchased these tubes but I know one was an EBAY seller and think the other was a fairly well known dealer online.  I have also inquired with Tone Imports and with Leben's US service center regarding the reported pre-amplifier modification; the answer is NO IT IS NOT AVAILABLE.  So, I bring this forward both to alert others of the possibility that those matched quads may not be matched ( or even functional ) and to see if anyone has been able to find a reliable source for the 6CS7.  Lastly, maybe its time to start collectively contacting Tone Imports regarding the need to start modifying our CS 600's.  I wish us all peace and happy listening.

rivinyl
rivinyl OP
130 posts
 

Ok

but who is he?

rivinyl OP
130 posts
 

Ahh, found him online.

Will reach out to him.

Thanks for all the advice.  Another interesting tidbit.

The US distributor shared that the preamp tubes do not have to be a complete match.

Again I appreciate the input.

goose
711 posts
 

@rivinyl also check Andy Bowman of Vintage Tube Services.  He is the only one I trust and has quality tubes.  https://vintagetubeservices.com/

rivinyl OP
130 posts
 

I did reach out to Y Hontani and he did say the modification is available.  I must say I am wondering if its available in the USA as in the recent past, J Halpern stated it was not.  But if it is an option, has anyone ever heard the sound of the modified cs 600?

rivinyl OP
130 posts
 

Just to wrap up this thread; hopefully once and for all.

I did locate two reliable online sources for 6CS7 tubes.

They are Tubeworld express in Wisconsin and dB tubes in Canada.

Just in case anyone else is searching for replacement preamp tubes for their cs600.

I appreciate everyones' help and suggestions.

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