how high do you want to get, a transformer on ac can go both ways, so a 12V ac plug with a transformer ,
Toroidal Power transformer
Used to power tube pedals.
12 volts AC input produces a B+ of about 240 VDC when under load. or 120 using one half
Use the AC Wall wart below to power this transformer.
Size is 40mm x 40mm x 19mm high.
Note: Use 12 volts AC, not DC to power this tranny.
This tranny has PC style mounting pins but you can also solder wires to the pins for non PC hookups.
See the tube pedal project on the library page for usage tips and hookup diagrams.
See my chassis page for the tube pedal chassis.
Price each = $23.00 http://www.hoffmanamps.com/MyStore/perlshop.cgi?action=template&thispage=Transformers&ORDER_ID=274142820