(!!!!) (Best Pair) 6EA7 RCA black plates NOS 1964 (2.4/40.4ma and 2.4/36ma)

1 pair) 6EM7 RCA black plates NOS 1964 (AJ)

1 tube) 2.4ma Gm=2100 (triode) 40.4ma Gm=6500 (pentode)

1 tube) 2.4ma Gm=2200 (triode) 36.0ma Gm=5800 (pentode)

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)