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(!!!!) (Recommended Quad) 403B=6AK5 Western Electric NOS "D" getter 1969 matched set of 4 (6.9, 6.9, 7.1, 7.2ma)

By Tube World

$ 149.99

1 matched quad) 403B Western Electric NOS "D" getter 1969 original boxes

1 tube) 6.9ma Gm=4900

1 tube) 6.9ma Gm=4800

1 tube) 7.1ma Gm=4900

1 tube) 7.2ma Gm=4600

 

 

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

See more: vacuum tube
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