Practice: when I do not play on HF, I can easily connect to a small sound system and simplified to make my mix myself.
The power supply accepts JTS mics I use, but the Shure mini-XLR.
Two output levels, I use it mainly in "micro" level but you can plug in standard "line" input on high level - you know, the line inputs which are the only remain free when there are plenty of microphones on stage
9V batteries, preferably alkaline. Remember to switch off, otherwise the battery will explode budget! In line level, the battery is flat quickly.
Damage, the XLR output is unbalanced. In most cases this is not a problem, but it's too bad anyway.