(!!!!) (Best Pair) 403B=6AK5 Western Electric NOS "D" getter 1969 (7.3/7.0ma)

1 matched pair) 403B=6AK5 Western Electric NOS "D" getter 1969 original boxes 1 tube) 7.3ma Gm=5000 1 tube) 7.0ma Gm=4800   Matched on Amplitrex Vplate=180V Vscreen=120V Vgrid=-2V Good Iplate = 5.5 - 7ma Good Gm = 4000-5100   Recommended for - Little Dot Mk3 - Little Dot Mk4 SE - Grant Fidelity tube buffer - CAD Trion tube microphone - Miniwatt EL84 amp - Grant Fidelity B283 - Darkvoice 332 - Yaqin CD 2