All you need fot the step-up version
Shackman modern new PCB version, encapsulated, 1:50, secondary center tap
Full range type 50W, surface mounted
Excellent, new technology transformer for WR-Type or full range use. Secondary center tap
640V/440/350-115-15V-6,3V 4A , toroidal
prim.: 0 - 115 - 230V
sek. : 0 - 320 - 440 - 640V/0,10A for HV audio amplification
115V/0,05A for HV EHT polrization voltage
2x15V/0,10A for active crossover
6,3V/3,50A, tube heater
d = 97 mm h = 50 mm
T 40/E 50/60Hz n. EN 60742, CE certificated