(!!) (Recommended Single) 12AU7A RCA clear top NOS 1973 (11.6ma/12.6ma) (High Gm)

1 low noise tube) 12AU7A RCA clear top NOS 1973

11.6ma Gm=2400

12.6ma Gm=2400

Tested on Amplitrex

Good NOS Ma range 7-10ma

Good NOS Gm range 1800-2200

(the best sounding US made 12AU7A, the 5814A RCA is also good from 1959-1970)
(also consider subs 5814A and 6189 RCA)

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