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(!!!) (#1 E288CC Pair) E288CC=8223 Siemens branded VALVO NOS 1972 (High Ma and Gm)

$ 199.99

1 low noise pair) E288CC=8223 Siemens branded VALVO NOS (N6-2A=1972) same date codes
1 tube) 37.5/38.5ma Gm=21,900/22,300
1 tube) 35.6/36.5ma Gm=21,200/21,300

NOSMa = 30ma

NOS Gm = 18,000

 

(Specs: Vfil=6.3 Ifil=0.475A, Vplatemax=250V Pwattsmax=3.0)

Typical Operation:
Va   Vg1   Ia     Ra     Gm  Rk    Mu
100 -1.5 30.0 1,400 18.0 350 20-25

See more: vacuum tube
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