I have two used Mackie DFX-6 6 channel integrated live sound mixers with EMAC Digital Stereo Effects Processors. $75 each
DFX mixers are designed specifically for solo or small performing groups that don't have the luxury of a front-of-house sound technician--those die-hard do-it-yourselfers that manage their own set-up and tear-down while possessing the uncanny ability to simultaneously make music and control their own audio mix. All knobs are color-coded and can be easily identified at a glance. Channel faders are white. Effects and Monitor Sends are red. Master level faders are blue. The jack field is on the top surface so connections are immediate and every channel has a Level Set and Overload LED that can be effortlessly seen on a dark stage.
Extremely easy to use, these mixers are also equipped with all of the same features that have made Mackie mixers the standard for working musicians. Both new DFX include a combination of mic/line and stereo line inputs, silky smooth 60mm faders, and Mackie Designs' proprietary 32-bit EMAC custom digital effects processor with 16 effects. Each mixer also offers low-noise, low-distortion, studio-grade, 5-band stereo program equalizers wrapped in a box rugged enough to withstand years of on-the-road wear and tear.