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There are two aux sends on every channel (which enable you to route individual channels to stage monitors or external effects), and two stereo aux returns. The built-in USB interface allows for a bi-directional transfer of the raw (non-fader or EQ) audio and effects to and from your computer. The built-in 24-bit dual engine effects processor features 16 presets that include, reverb, chorus, flanger, delay, pitch shifter, and multi-effects.
You can edit the parameters of every preset, and a tap tempo button is included to sync time-based effects. The 4 built-in compressors are designed to simplify the process of controlling dynamics in your mix. With a single knob you can dial in the amount of compression you need for any given sound.