Used but in excellent condition, this Universal Audio Apollo Twin X Duo 3 is a premium desktop audio interface that offers elite-class A/D and D/A conversion, realtime UAD processing, and robust connectivity. Featuring two Unison-enabled preamps, the Apollo Twin X Duo lets you track through classic analog emulations from Neve, API, and more with near-zero latency. With two combo mic/line inputs, one Hi-Z instrument input, and two line outs, plus optical input expansion via ADAT, it's perfect for both home studios and mobile production setups. Powered by the DUO Core processor, it enables smooth tracking and mixing using UAD plug-ins without overloading your computer's CPU. Compatible with Thunderbolt 3 on macOS and Windows, it delivers ultra-low latency performance for professional-level audio production. This unit shows minimal signs of use and has been fully tested to ensure flawless operation��ideal for creators seeking top-tier sound with proven reliability.