I've had two negative experiences with midiman boxes ...the first was a sync box that nearly drove me insane until I returned it to them and with the new box came a new manual which gave the opposite directions from the first one ...Also I bought a midi interface which three highly paid computer professionals were unable to install...I went out and spent a few exta dollars for an opcode box and even an amateur like me could figure it out....A lot of people really endorse MIDI Man/MAUDIO but I don't trust that company.....