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(!!!!) (~ Recommended 300B Pair ~) 300B Western Electric used/good 1997 and 2006 (59ma and 62.4ma) (98-100% output)

$ 1,299.99

1 pair) 300B Western Electric used/good

1 tube) 2006 in WE box (59ma) (98%)

1 tube) 1997 in WE box (62.4ma) (100%)

 

Test Data:

300B REFERENCE NOS TEST DATA:

Vplate=300V, Vgrid=-58, Iplate=60ma  Gm=5500 (NOS reference)

Vplate=400V, Vgrid=-80, Iplate=85ma (NOS reference)

 

300B Serial #230747 TEST RESULTS: (2006) in #219992 box

Vplate=300V, Vgrid=-58, Iplate=59.0ma (98%) Gm=5000 (90%)

Vplate=400V, Vgrid=-80, Iplate=82.5ma (95%) Gm=5400

 

300B Serial #208078 TEST RESULTS: (1997) in #219975 box

Vplate=300V, Vgrid=-58, Iplate=62.4ma (100%) Gm=5000 (96%)

Vplate=400V, Vgrid=-80, Iplate=89.0ma (100%) Gm=5400 (98%)

 

 

 

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