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(!!!) (Best Pair) 6EM7 GE gray plates NOS 1960's (1.9/45ma and 2.3/44.5ma)

(!!!) (Best Pair) 6EM7 GE gray plates NOS 1960's (1.9/45ma and 2.3/44.5ma)

$ 48.88

1 pair) 6EM7 GE gray plates NOS same build

1 tube) 1.9ma Gm=1900 (triode) 45ma Gm=7400 (pentode) 1969 (EZ)

1 tube) 2.3ma Gm=2100 (triode) 44.5ma Gm=7100 (pentode) 1970 era

 

Tested on Amplitrex

Good Ma Triode = 1.4ma Gm=1500

Good Ma Pentode = 35-40ma Gm=6500

 

for:

Joule Electra LA-100 MK3
Modwright power supply
Wright Sound phono wpp-200c
Wright Sound WLA12A preamp
Kenji Mizushima Kenso
Music Reference 6EM7 amp
Welbourne Apollo mono amps (KR/VAIC VV52B or 300B output tubes)

 

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