(!!!!!) (Recommended Pair) 6350 Sylvania black plates NOS 1950's "D=SQUARE" getter rebranded United (8.8/9.2ma and 9/10.2ma)

1 low noise pair) 6350 Sylvania black plates NOS 1950's "D=SQUARE" getter rebranded United in United boxes

1 tube) 8.8/9.2ma Gm=4300/4300

1 tube) 9.0/10.2ma Gm=4400/4600

Matched on Amplitrex

Vplate=150V

Vgrid=-5V

Good mA per section = 9-11ma

Good Gm per section = 4300-5000

recommended for:

- VTL Wotan MB1250, VTL MB450, VTL MB300, VTL 225 Deluxe, VTL Deluxe 140, VTL Stereo 120/50, VTL ST150

- VTL Siegfried

- Joule Electra LA-150 (mk2)

- Joule Electra LA 100 Mk.III

- Shindo-lab Corton