1 tube) CRP-6CG7 Raytheon black plates and black electrostatic shield and "O" getter halo 1962

1 section) 8.0ma Gm=2900

1 section) 8.8ma Gm=2750

Tested on Amplitrex

Good Ma range 7-9ma

Good Gm range 2300-2600

(RCA made the best sounding 6FQ7 and 6CG7)

- 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
- Lisson Grove R-124 compressor