So I’m using the mix pre 6 taping a local phish tribute band. I got about 30 mins on 4 AA batteries. I ran to Walgreens and grabbed a USB-C wire. That only lets you run one set of mics. I was running two sets, just took one set down during set break. How the hell can I power this thing without burning thru 40 batteries per show. Any help would be great. Going to tape blackberry smoke next Sunday and would like to do 4 mics. Thanks I’m advance for any help or links!