The Pearl K737 is a K-mix Is An Unbreakable, 8-in/10-out Programmable Mixer And Audio Interface. K-mix Features 2 Ultra-accurate, High-efficiency Low Noise µpre Preamps, And A Precision Opto-tactile Control Surface That Was Designed From The Ground Up For An Unprecedented Level Of Control. We've Made Super Clean Audio More Accessible, So You Can Focus On The Music. K-mix Is A Go-anywhere, Fully-programmable, Audio Multi-tool That Can Meet All Your Needs As An Artist, Whether You're In The Studio Or On The Road. With No Moving Parts, K-mix Can Be Transported In A Backpack Without The Fear Of Snapping Off A Fader Or Knob, While Still Giving You Unrivaled Audio Quality, Mixer Functionality, And Control.