6EJ7 RCA by Siemens Germany NOS 1972 (12.4ma)

6EJ7 RCA by Siemens Germany NOS 1972

12.4ma

Gm=16,200

– Shindo preamp
– Klimo Beltaine 300B amplifier
– Graaf GM20
– Aitos 800Ren amp 1978
– Octave HP500 MK III preamp
– Futterman H-3-AA mono OTL