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6EM7 RCA coin-base black plates used/good 1970's (2.6ma/63ma)

6EM7 RCA coin-base black plates used/good 1970's (2.6ma/63ma)

$ 7.99

6EM7 RCA coin-base black plates used/good 1970's 

2.6ma Gm=2100 (triode)

63ma Gm=5200 (pentode)

 

Tested on Amplitrex

Good Ma Triode = 1.5ma Gm=1500

Good Ma Pentode = 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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