(!!) (Good Value) 12AU7A RCA clear top used/good 1960's (8.8/9.0ma)

1 low noise tube) 12AU7A RCA clear top used/good 1960's 

8.8ma Gm=1700

9.0ma Gm=2000

Tested on Amplitrex

Good used Ma range 7-9ma

Good used Gm range 1700-1900

(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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