So I play bass. Fine. I also play some keys and would like to have the ability to run through the same rig for smaller gigs where we don't have a sound-man. Now, I know I can swap cords around... I also know I can use a standard small desktop mixer... but it would be ideal to have a little 1U mixer that doesn't color the sound, just allows me to set levels. Anyone else out there have this sort of setup - and if so, any suggestions for a mixer would be great!