DK Design VS- Reference vs Signature

Actually saying that 'paying $250 a pair is unnecessary' is somewhat misleading. Of course one can get poor quality, or what I consider to be throw away Bugle Boy tubes for the prices mentioned, from ebay or many other private sellers.

Allow me to correct any unclear or somewhat misleading statement.

Here's a quad of excellent quality Amperex 6DJ8 Bugle Boy tubes that all test strong. One day remaining in the E-Bay auction, and they are priced at less than $20/quad.

Now, I suppose it's incumbent upon me to offer apples-to-apples proof that Amperex 6922 PQ USA White label tubes that are tested and guaranteed can be purchased at prices substantially below $250/pair from E-Bay sellers.

Here is a matched quad Amperex 6922 PQ USA White label tubes that I purchased from an E-Bay seller for less than $220/quad ($110/pair) that measure 101/101, 100/100, 100/100 and 102/102. These are excellent tubes with outstanding test measurements that were offered with a return guarantee by the seller.

I have purchased other tubes off E-Bay that were offered with test measurements and with return privileges. None of these tubes have been anything other than tested, excellent quality, and far from throw away.

I stand firm on my point that one does not have to pay $250/pair for excellent quality vintage Amperex 6922 PQ tubes, but one certainly has that option.

Buy from whomever makes you comfortable.

Its not life or death. Its only money and more can be had. Tom

Larry, thanks you very much....You have a lovely product and I am one satisfied customer. I really love the way this amp sound. Another question, Can you please give me instruction on how to install it. One thing I know for sure is I will have it unplug when I install it. I am assuming the only thing I have to do is disconnect the top of the amp with an alley wrench. Once disconnected the amp, remove the tube then put the other in the same way I took the other out, right? Is there anything elso I am missing.

Yikes. How can it be that "new old stock" is not really new at all, and you consider that acceptable. This is bizarre. I would assume that NOS means it's been tested but never used for anything more than a few hours.
ARt

NOS means exactly that...New, Old Stock. These are unused vintage tubes. Used tubes cannot be called NOS, but NOS is a term commonly misused by tube sellers to describe any vintage tube. That's why a buyer of NOS tubes should always ask the seller if the tubes have ever been used.