Forte F 45 Preamp

Does it have an input for an external power supply? I think the F-44 that came with out an external power supply, still had an input for one.

It has a single connector labelled " data bus " no idea what that is. the rest are rca and xlr ins and outs and a detachable power cord

Sorry Unsound, the F-44 had no option for an external power supply. Here is a manual for the F-44,

http://www.soundcable.ru/stuff/FORTE%2044.pdf

It does have the "data bus", and the manual states that is for the remote controlling other equipment, which doesn't make much sense looking at the buttons on the remote.

J135, I would send Jon Soderberg an email. If anyone would know, he would. He worked for Threshold during that time. Here is his website,

http://www.vintageamprepair.net/
.

"Never mind".:-)