1 matched pair) 45 RCA and Cunningham used/good same build in white boxes

1 tube) 33ma Gm=1850 Cunningham

1 tube) 29ma Gm=1950 RCA

Matched on Amplitrex

Vplate=275V

Vgrid=-54.8V

Good NOS ma = 30-35ma

Good NOS Gm = 1800-2000

Recommended for

Tektron

Deja Vu

Victor RE-36 1929

DIY