The EH 12AY7 from EHX, also known as the 6072A, appears in many vintage amps. A great valve for improved headroom. Pin compatible with the ECC83 (12AX7), but with lower gain. Used in a good deal of early Fender Tweed amps as the first preamp stage (V1 valve position). Many harmonica players favour this valve in the V1 position.
Made in Russia.
Includes a 180 day from receipt warranty (excluding user-caused mechanical damage) for peace of mind.