(!) (Recommended Single) 6GM8=ECC86 SIEMENS HOLLAND NOS 1970 (4.0/5.0ma)

1 low noise tube) ECC86 SIEMNENS HOLLAND NOS 1970 "A" Frame getter halo in SIEMENS box (tn2 series) (tn2-delta0C1)

1 section) 4.0ma Gm=5800

1 section) 5.0ma Gm=6400

tested on Amplitrex

- Wavelength Cosecant USB DAC
- Aikido preamp
- Cavalli Audio EHHA (Embedded Hybrid Headphone Amplifier)