Check out www.electron-valve they guarentee there cry'od el34 and if you don't like them send them back for refund. Svetlana $150 a quad . Good Luck
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Thanks for the input.
Stock Valve Art EL34s are a hands down winner over the Svetlanas (non-cryoed). I certainly wouldn't pay 150.00/quad for any of them. But the asking price of the VA per quad is only 15.00 over the standard version, so it's a near no-brainer. I just thought I would see if there are any other opinions out there.
I have cryoed VA EL34's from Tubeman in my Cary Cad 50's(replacing svetlanas) I paid $69 for matched cryoed quad. The difference was immediatly noticable, the VA's have much more range and speed.
I should add that these are used to run the highs in a biamped setup so I no experience with them below 300Hz
I picked up a spare quad, I know I'll be kicking myself if these become unavailable one day.