Got mine in hand. Two of the three USB C cables I ordered don't send enough power from a USB battery to power more then 2 channels of phantom. The stock one from SD only works on 4 channels if both USB A plugs are plugged in. This is the one that can power 4 phantom channels off a USB battery. https://www.ebay.com/itm/162439366511
Thanks Ted, I just bought the LAST one left
I think the guy keeps listing them one at a time, so that you're forced to buy "the last one" lol
Also yinz guys, I sent SD an email awhile back asking about MP6 USB powering, and they told me some current draw numbers for the different powering methods! This is a quote directly from Dennis Witt@SD
"Hello Brandon,
Thank you for contacting Sound Devices!
Via the USB-C amperage, we do not have any information as this varies depending on USB source capability. The unit will pull 5v, but depending on the USB amperage, the MixPre Series will determine if it will be in "Low Power" or "Standard Power" mode. The MixPre Series will automatically determine what mode to run in and will be indicated on the home screen. Additionally, any USB port which doesn't put out 1.5A would be considered "low power."
However, I do have some information about current with the MixPre-6:
4-cell AA ? 660 mA @ 6v
Li-ion L-Mount: 530 mA @ 8v
550 mA @ 8v (with all channels with +48v)
Thank you,
Dennis Witt
Sound Devices, LLC"
So according to that, running the L-Series Lithium Batteries will provide the longest runtimes, because it draws less power than the other powering options! The 4xAA Pack only runs @660mah, and he wasn't sure of the 8xAA Pack! What's weird is that those draw UNDER 1A@MAX, but the USB-C Port draws DOUBLE that @1.5A
Whatever though! As long as you have a sufficient USB-C cable, you should be just fine powering the MP3/6 with a SINGLE USB-A power source from a 2.1A or 2.4A USB-A Output! Like I said above, I'll be buying a few different Anker 5v USB Batteries to run STRICTLY with my MP6!
That said, I have already bought [3] different USB-C cables recently for my MP6, so one of them has got to do the job! Thanks again for the link, Ted
Plus, I have an extra Google Pixel USB-A->Micro C Cable that came with my phone, that I KNOW will supply enough power to the MP6, because it can charge my Pixel phone@1A Max