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1 low noise pair) E288CC=8223 Siemens Halske Germany rebranded Telefunken NOS 1970 (N6-0F=1970) same date codes
1 tube) 33.2/33.0ma Gm=20,500/21,000
1 tube) 33.3/32.5ma Gm=22,200/21,900
NOS Ma = 30ma
NOS Gm = 18,000
Tested on Amplitrex
(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
Ships within 48 hours · Estimated delivery Jun 26 - Jul 1
US$40
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