M.P.C. DSM-2 QUESTION

[JASON PHILLIPS]

I recently picked up three drum synth modules made by MPC electronics,  
problem is they have no power supplies.  They have led's marked +&- but 
what voltage/pin out?  The power jack is a standard MIDI piece.  The 
ic's inside are LM13700n and LM324N parts if that helps.  It was 
designed by a guy named Clive Button, presumably from England as the 
unit was made there.  Any help or info about these would be great.

Jason Phillips

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