This used Universal Audio Apollo Twin Duo MKII audio interface is in good condition and fully functional, making it an ideal choice for professional and home studio setups. Featuring two Unison-enabled mic preamps, high-quality 24-bit/192kHz audio conversion, and built-in UAD-2 DUO Core processing, it allows real-time tracking with classic analog emulations and reduced CPU strain. The compact desktop design includes two combo XLR/TRS inputs, two TRS line outputs, a front-panel Hi-Z input, and headphone output, all accessible through an intuitive control knob. Compatible with macOS and Windows via Thunderbolt (cable not included), it's a powerful interface for recording, mixing, and producing music with Universal Audio's acclaimed software plugins.