I just recently picked up a PS Audio 200CX amp and PS Audio 4.5 Preamp from Craigslist. The Preamp came without the accompanying power supply. It's fully capable of working as a passive preamp (granted, phono doesn't work in passive mode), but I was wondering if it would be possible to make a new outboard power supply.
All rectification and filtering seems to be handled inside the preamp chassis, so it really only requires the specs of the transformer used. It's a long shot, but does anybody know or have any rough estimate?
On an unrelated note, the 4.5 and 200CX together sound very good. It's a lot more amp than I currently need, so I will probably end up selling it before too long; it was just part of a package deal. I'd like to keep the preamp around.
If it'd help, I could take and post some pictures of the preamp.