(!!!) (Recommended Pair) 6FQ7 Sylvania NOS 1970's same build (6.4/6.8ma and 6.4/6.4ma)

1 low noise pair) 6FQ7 Sylvania NOS 1970's same build

1 tube) 6.4/6.8ma Gm=2300/2300 branded RCA

1 tube) 6.4/6.4ma Gm=2200/2300 

Matched on Amplitrex

Vplate=250V

Vgrid=-8V

Good Ma = 6-9ma

Good Gm = 2300-2500

- Stax SRM-T1S, SRM 007T, SRA-35
- Stax SRM-006tII
- Marantz 8B
- Marantz 2
- ARC D79, D79A
- Moscode 401HR amp
- Conrad Johnson Premier 8A Monoblocks
- Conrad Johnson PV-9A preamp
- Conrad Johnson Premier 11A
- Art Audio Vinyl 1 phono stage regulator tube
- Gill Audio Elise DAC
- AVA T8+ preamp
- Audio Research D-250 MKII Servo
- Leben