I actually use this as a signal splitter rather than a mixer (though I have used it as a mixer for running multiple guitars simultaneously). I run two separate amps, and keep the gain up on one but don't want as much input volume, so this thing does wonders.

I got his thing to do one thing and one thing only. Mix multiple channels into one amp.

I have a Morley A/B/Y switcher to switch between dedicated Distortion and Clean w/ chorus + eq, and I wanted to be able to run both chains into one amp. So I got this little puppy and it works like a charm!

I gave it all 5's because it has neither more nor less features than what I need it to do, volume levels, that's it. Construction is really rugged and solid. It's fairly inexpensive to boot.

Now I can have dedicated FX chains and balance the levels when running into one amp!

I needed a simple, inexpensive, way to consolidate several sources from my drum kit (SPDS, Yamaha drum controller, etc.) when not using a house system. This little box worked perfectly. It combined 3 unbalanced sources into one output. I controlled level from sources so I didn't use the level controls, but I could see them being useful for level matching. I now use it to combine sources in venues with limited house systems and find it useful to personally control my electronics mix by setting the controls at 3/4 attenuation during the sound check. This gives me the ability to increase or decrease levels outside of the house mix. All in all a nifty little problem solver. Get one and toss it in your toolbox. Simple to use, solid construction, versatile.

I use this to mix the stereo outputs from my Vamp into a Tech 21 Power engine (mono). Works great.