Amperex 6922 Pinched Waist Quad NOS NIB E88CC 6DJ8

Edit--price reduced to reflect what I've offered other Audiogoners who have responded.

The last %. If you are fortunate enough to need only the final touch in an already amazing system, this could be it. As my favorite gin proudly announces, "It is not for everyone." Are they for you?

Here are two pairs of Amperex 6922 Pinched Waist. NOS? I don't have the time machine (where did I put that?!) to go back to 1957 to confirm that these haven't been used since. But they sure do measure like NOS. And their fragile printing is in condition of other tubes (which means pretty good but not 100%) I've seen called NOS. So, if I'd ever say NOS I will say it for these.

Two pairs are available, or a nice quad. Original boxes are in good shape (8/10) while the tubes are in very nice shape physically. Measured by my tech on his Hickok 539C where minimum good is 7,250 and NOS is 12,500--

7L3 Delta 8A (etched code: 07H) = January 1958
Tube 1 = 13,500 & 13,500
Tube 2 = 14,000 & 13,000

7L3 Delta 7L (sanblasted code: 01H) = December 1957
Tube 1 = 15,000 & 14,000
Tube 2 = 13,500 & 12,500

Rarely do NOS pairs come available. Even more rare is a NOS quad. I may offer a pair if you are interested in just that. Email me about that.

Normally, I do not accept returns. But I no longer have any equipment that uses these and so I have not listened to them. The only fly in the ointment with Amperex pinched waist is that some tubes can be microphonic in some circuits. if these are microphonic in your gear I will accept your return of them within 7 days of receipt in as sold condition and I will return your purchase price.

Shipping to USA only. Shipping via USPS priority included.
Best,
Doug