1 low noise pair) 5814A GE "5 STAR" triple mica "O" getter halo 1960
1 tube) 10.0/10.4ma Gm=2300/2300
1 tube) 10.0/9.2ma Gm=2200/2100
Good Ma range 8-10ma
Good Gm range 1800-2200
- Woo Audio WA4 headphone amp
- Bottlehead Crack
- Bottlehead Foreplay
- CJ PV12
- Jadis amp
- Unison Research Unico-P 2005
- Einstein preamp
- Head-Direct EF1 Hybrid Headphone Amp 2008