We do make such a transformer; it's called the PT-5 and is used in the Eros. It can supply 1.3 amps of regulated DC current for heaters, and 55mA of plate current at 275 volts, using a voltage doubler as is done in the Eros. The PT-5 runs are very low magnetic induction in order to maintain a low magnetic leakage field, so that it does not need the molyperm shield tape of the PT-1.
The PT-5 is much larger than the PT-1, and requires a large rectangular cutout on the chassis plate - I think it would be impractical to use it on the same chassis plate, which is why I have not suggested it before.
We did look at making a version of the Seduction with this power supply. It's quite attractive, but it would be the same cost as the Eros, which we feel is a bit better sounding circuit.
