Great in certain uses

I used this for my guitar amp. My group used wired in-ear system across the board, and I NEVER had enough ME in the mix.

I mic'd my amp, plugged that mic into MyMONITOR, then the thru to the snake up to FOH. Ran my out from the headphone amp we used to plist the signal to each person into the monitor input on the back.

During soundcheck, i kept my mic volume at zero, and put the monitor at a comfortable volume.

Once we started playing, if i needed more me, i could tweak the Mic knob up a little more to give me a bit more of me. Worked perfectly.

Another guy in the group got it too, and loved it as well.

Still use it as a backup in my current monitoring situation, but not using it to potential, basically just as a Headphone amp, not a mixer at all.

Great Unit!

I use it to mix click track with different midi & audio playback tracks in live situations, and it newer let me down.
If your plugs is solder correctly everithing must be OK.

OK product, but a few kinks for poor-man's IEM

bought this as a first step into IEMS - thought the ability to blend the mic signal direct with the monitor mix would be good. Ability to power via 9V battery or wall wart is a plus.

First problem - latency from a digital board introduces weird comb filtering; you're better off sending a full monitor mix with vocals into the monitor in.

Second problem - the monitor in doesn't take a TRS line level signal and send it as dual mono; it only puts it in one ear. You can't use the mic input as it's way too hot even with the line level padded way down. Still trying to wire up a special Female XLR- TRS cable to use.

Overall, great if you are doing karaoke or are comfortable with soldering cables, but not the answer for a poor-man's IEM at all - better off going with a rack-mount headphone amplifier or the Shure hardwired IEM packs for that.