The TTM 57SL is an audio mixer console, also known as a DJ mixer, designed by Rane Corporation. Rane and their software partner Serato, also known as Serato Scratch Live, teamed up together to create the TTM 57SL from Rane's prior TTM 56 disc jockey DJ mixer. The unique feature of this DJ mixer is that Serato and Rane brought their respective software and mixer hardware to create a hybrid mixer integrating two products into one, thus making it the first DJ mixer of its kind.