(!!) (#3 7551 Pair) 7551 RCA black plate branded Motorola NOS 1970”s (44ma and 45ma)

1 pair) 7551 RCA black plate branded Motorola NOS 1970”s

1 tube) 44ma Gm=5300

1 tube) 45ma Gm=5400

Vplate=250V

Vscreen=250V

Vgrid=-18V

Good Ma = 35-40ma

Good Gm = 5000-5300

Beam Terode

9 pins

12-15V filament

10 watts