The evolution of the entertainment industry has necessitated the creation of an outboard mic/line device to compliment existing mixing consoles. Whether you're recording, mobile mixing, or broadcasting, there are occasional needs to expand your existing arrangement. Frustrations abounded when it came to adding mics for interviews, karaoke, and live performances because it was cost prohibitive. Now it's quite inexpensive to enhance your existing gear and expand the number of live mics for any gig. The MLM 42 is unique. Four Burr-Brown mic preamps give you the studio-grade quality you've asked for.