Used in good condition, the Universal Audio Apollo Twin Duo is a professional 2x6 Thunderbolt audio interface offering elite analog sound with real-time UAD processing. This desktop unit features two premium Unison preamps, allowing accurate emulations of classic analog mic preamps, and includes Duo Core processing for running UAD plug-ins with near-zero latency. With high-resolution 24-bit/192 kHz audio conversion, monitor control, and a robust aluminum chassis, it's built for studio-quality recordings and mixing. Compatible with macOS systems and ideal for home studios, music producers, or engineers seeking world-class sound and powerful DSP in a compact form, this used Apollo Twin Duo delivers excellent performance and reliability at a great value.