Getting Good Audio Without USB?

[@AaronBowley]

is firewire also excluded from being an option? my mackie onyx 1640i still going strong

[@DailyTechNews.mp4]

Interesting video & situation. If the batteries would be a problem in such a situation, you could DIY the device & replace the battery with some sort of external power like a USB charger with USB cable going to the battery pins & then a 5v to 1-12v voltage regulator... or any appropriate DC charger.... :3