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RCA Cleartop 12AU7 - Absolute perfect inventory that I found from an aerospace company many years ago. The tube has quite a following, though I don’t know how well-deserved it is. They have lots of detail and sparkle, especially on top. If your system is already a little bright on top, this is not the tube for you, but if you want to liven up a somewhat relaxed top end, this may be the ticket.We have very low noise low microphony examples available.
Price is for a single tube.
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 - Not available for this tube.
If you have a preamp or phonostage, you need at least Gold grade.
Price includes matching in any quantity you need at no extra charge.