(!!!!!) (Recommended Pair) 6EM7 Sylvania coin-base NOS 1970's (1.8ma/40ma and 2.3ma/43ma)
$ 54.99
1 pair) 6EM7 Sylvania coin-base NOS 1970's same build
1 tube) 1.8ma Gm=1900 (triode) and 40ma Gm=6700 (pentode) branded RCA
1 tube) 2.3ma Gm=2100 (triode) and 43ma Gm=6900 (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)
See more: vacuum tube
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 (Recommended Pair) 6EM7 Sylvania coin-base NOS 1970's (1.8ma/40ma and 2.3ma/43ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_a1074bd8-2ae9-4e50-b9fa-b7cc4e287a98.jpg?v=1721670719){kind=link}
 (Recommended Pair) 6EM7 Sylvania coin-base NOS 1970's (1.8ma/40ma and 2.3ma/43ma) "Pin It")