(!!!) (Good Value Pair) 6GK5=6FQ5A Sylvania rebranded Raytheon NOS (8ma and 8ma)

1 pair) 6GK5=6FQ5A Sylvania rebranded Raytheon NOS

1 tube) 8.0ma Gm=11,800

1 tube) 8.0ma Gm=12,100

Tested on Amplitrex

Good Ma range 9-11ma

Good Gm range 13,00-15,000

- Conrad Johnson Premier 10, 14 preamp and DAC
- Supratek
- Wright