NOTICE: Be sure to enter the Make & Model of component you are purchasing tubes for. Failure to do so will delay processing of your order. This does not imply that we confirm compatibility. Consult the manufacturer and owner's manual before ordering.
GE 12AU7 / 6189W
Helically-wound filaments baby! This special military-spec 12AU7, when selected by ear by the Upscale Audio crew, can in some circumstances (but not all) drop the noise floor; blacker blacks make for better detail and musicality from top to bottom. Bob Levi from Positive Feedback Online was shocked by the results!
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. Kevin's Stash are the handful of tubes in this grade that test to near perfection.
Gold grade - Low noise and microphonics with a triode balance typically between 15% and 20%, but may be higher depending on available stock.
Price includes matching in any quantity you need at no extra charge.