Mic-Pre Power Supply :-

The Dual Mic-pre was originally made with battery powering in mind. However there have been requests to mount this into a rack box and add a power supply.

Here is a simple power supply that should be fine, even with four Mic-pre's. The interesting thing about this supply is the phantom power is derived from a Sony DC to DC converter.

The circuit diagram .......

PCB board check plot and overlay should help to identify all the parts and where they fit in the scheme of things.

Pictures help to put things into their correct perspective

Click the thumbnails to view 480x360 pixel versions of the JPGs.