Here are the specs. It is not likely to be plug and play with another device, but here you go.
If current design - older units had a single B+ output.
4 pin XLR:
Pin 1 = G.
Pin 2 = 12V filament (2A)
Pin 3 = 260V (100mA)
Pin 4 = 260V (100mA)
Thanks,
Dan