Dear Wireknot: Maybe this could sound something stupid but maybe ( I can't be sure ) the MK2 power supply could work with it and this mK2 is more easy to find, even you can buy a SP-10 MK2 ( very low price ) and take the PS but like I told you I can't be sure it works: maybe yes.
The other road could be to find the squematic diagrams through Vinyl Engine and that your audio friends that you named build one for you.
Regards and enjoy the music.
Raul.