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(!!) 12AU7A RCA clear top used/good 1961 (8.8/9.2ma) (High Gm)

(!!) 12AU7A RCA clear top used/good 1961 (8.8/9.2ma) (High Gm)

$ 19.99

1 low noise tube) 12AU7A RCA clear top used/good 1961

8.8ma Gm=2100

9.2ma Gm=2100

 

 

Tested on Amplitrex

Good used Ma range 7-9ma

Good used Gm range 1800-2000

 

- the best sounding US made 12AU7A

- the 5814A RCA is also good from 1959-1975

- also consider subs 5814A and 6189 RCA



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