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If there is such a thing as 3-dimensional vacuum tube this is it. I was sooo bummed when we ran out of our last stash of Cifte 12AU7s. I just took them for granted, and before I knew it, they were gone. So I have put aside some for myself. Remember...Upscale Audio is the 800 lb gorilla in tubes and I buy every piece of cool tubes that come my way.
This tube has such wonderful clarity and musicality... ask anyone who uses 'em, and they'll tell you just how great a tube they are.
Well.. I just came into one more stash. I can about guarantee they will never appear again. These tubes are made by Mazda, branded Cifte. They are quiet, and they have a wonderful 3D sense of space and nice top end sparkle. Not super warm... so if that's your bag go with a Mullard instead. But not bright. Kind of like a really cute 22 year old girl giggling 'cause she drank a few glasses of champagne. Really pleasant.
So drink up before we run out.
Platinum grade - The best of the best. Lowest noise and microphony with the tightest triode balance we have available. This is typically 10% or tighter, but may be higher depending on available stock.
Gold grade - Low noise and microphonics with a triode balance typically between 15% and 20%, but may be higher depending on available stock.
Driver/Buffer grade - Lowest noise but not the lowest in microphony. Triode balance will be similar to Gold grade.
This grade is only suitable for use in the driver stage of an amplifier, or the output/buffer stage of a DAC or CD Player.
If you have a preamp or phonostage, you need at least Gold grade.
Click here for a more in depth discussion on how we grade tubes.