Universal Audio Apollo Twin x Quad Core Audio Interface With Box - UsedThe Universal Audio Apollo Twin X has become the gold standard for both home recording enthusiasts and professional engineers on the go. The Twin X allows musicians and producers to easily track, overdub, and mix with elite class A D and D A conversion and two Unison enabled preamps, all in a desktop Thunderbolt 3 (USB C) audio interface for Mac and Windows. This unit is equipped with QUAD Core DSP Acceleration onboard that lets you track and mix in