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Value - Parts or Complete

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Posted on August 30, 2015 at 12:46:03
Jeff Starr
Audiophile

Posts: 1574
Location: Milwaukee, Wisconsin
Joined: March 4, 2000
Moderators, if I am violating some rule or rules, please accept my apology, and remove.

That said, I have a Nobis Cantabile [based on the Dynaco 70, with the Sutherland solid state first stage] that quit working. Nobis was built locally, and Brian, the man who designed it, is no longer reachable. I last heard serious health issues, which is a shame as he is a great guy. He also had a retail store called Sound Investments, now closed.
Some of you may know that Nobis became Signature Technology. I used their Nobis Proteus preamp for many years. Brian modified it for me with better caps and a Dact volume control. I just recently upgraded, and traded in the preamp.

So, I talked to a local tech, and he says that getting the amp up and running would probably be simple, but. Big BUT, he says that the FETs in the solid state first stage get noisy, and are no longer available. I was going to have it repaired and put it up for sale. It sold new for $1795, and at one time, got a good review in Stereophile [see link].

Ok, the cabinet all nice solid wood, transformers, and most of the rest of the amp is in excellent condition. I have a set of 4 tubes, plus two more that all test good on my Eico tube tester. My question is there a place other then here, or Audiogon, where I should list it for sale? And if it was working, I'd be asking around $800. What is a fair price, and what is something like this worth?

I realize I'm on thin ice here, but I really don't know if I should consider parting it out, or hope a Dynaco fan will buy it whole.
If you think we shouldn't discuss price in the forum, please email me.

 

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RE: Value - Parts or Complete, posted on August 30, 2015 at 13:27:52
Caucasian Blackplate
Industry Professional

Posts: 8313
Location: Seattle
Joined: June 18, 2004
Have your tech pull the solid state driver board and install one of the other driver boards available.

He is correct about the fets, though you may be able to find replacements on eBay.

 

RE: Value - Parts or Complete, posted on August 30, 2015 at 19:16:59
Triode_Kingdom
Audiophile

Posts: 10012
Location: Central Texas
Joined: September 24, 2006
I'm pretty sure I have a small stash of 2SK369 FETs. Also, I think there's another JFET that's just as quiet and more readily available, but I can't remember the number right now. FWIW, I've never heard of the 369 becoming noisy. Maybe you should get the amplifier running and deal with any additional issues as they come up.





 

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