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(!!!) (#1 E288CC Pair) E288CC=8223 Siemens branded Telefunken NOS in Telefunken boxes 1975

(!!!) (#1 E288CC Pair) E288CC=8223 Siemens branded Telefunken NOS in Telefunken boxes 1975

$ 189.99

1 low noise pair)  E288CC=8223 Siemens branded Telefunken NOS in Telefunken boxes 1975 same date codes (N6-5A)

1 tube) 27/30ma Gm=17,000/20,000

1 tube) 27/28.2ma Gm=18,200/18,400

 

Good NOS Ma = 25-30ma

Good 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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