(!!!) (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