The OBM-1 output booster/buffer module enables either an MTP-7 or MTP-8 MIDI-to-parallel circuit to switch much larger loads than normal. Taking the place of any usual ULN2803A octal output driver chip, the OBM-1 is quick and easy to install and requires no soldering. Each OBM-1 module controls 8 outputs and is rated at 1.5A per output. One OBM-1 module will be required for every eight MTP outputs that are to be upgraded in current rating.
OBM-1 used with an MTP-7