I use the black block-style interface which provides power (12v) - this allows me to go mics to MT directly, with no extra wires, unless I need to run a preamp after the mics. It's pricey, but keeps everything low profile. I started with the other (much cheaper) one, but if you want a small package, this is the way to go. You can also get a cheaper one without battery power, but then you're running a battery box between the mics and MT.
Scott