(!) (Best Pair #3) 6661=6BH6 GE NOS 1970's (6.2ma and 6.2ma)
$ 15.99
1 pair) 6661=6BH6 GE NOS 1970's
1 tube) 6.2ma Gm=4200
1 tube) 6.2ma Gm=3900
6661=mobile rated 6BH6 (6.3Vfil +/- 1.3V)
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 (Best Pair #3) 6661=6BH6 GE NOS 1970's (6.2ma and 6.2ma) "Pin It")