I run SSL and Mix Emergency for Video. I have run it pretty flawless for a few years. Recently, I had a few USB drop outs. At the same time, I started having issues with midi, the signal would drop, or I would have to restart midi by plugging and unplugging. I assumed it was my USB port. So I switched them up, bought a powered USB hub, bought new USB to midi cable bought all new cables. I haven't had the USB drop outs but I am still having issues with the midi signal dropping. Is it possible that I am having an issue with MIDI on the DJM-700? Is there a way to test or fix? I love this mixer and don't really want to buy a new one (or a higher priced replacement).