Channels 1 and 2 feature LIMIT/COMP switches that let you apply either limiting or compression to those channels. Limiting can be useful to prevent input overload and distortion with sources that have a wide dynamic range, while compression can add punch to vocals, bass, guitar, and other sources while smoothing out the sound and helping it to "ride" better in the mix. Like the STAGEPAS™ 300 mixer, the STAGEPAS™ 500 mixer has 2-band EQ controls on each channel, as well as REVERB switches on channels 1 through 4. A separate REVERB level control adjusts the reverb mix.