Used and in good condition, the Universal Audio Apollo Twin X Quad 3 audio interface delivers world-class sound with elite-class A/D and D/A conversion, built-in UAD-2 QUAD Core processing, and Unison mic preamp technology. Designed for Mac and Windows via Thunderbolt 3, this desktop interface offers two Unison-enabled mic/line preamps, optical ADAT input, and dedicated monitor and headphone outputs. Ideal for music producers, vocalists, and audio engineers, it enables near-zero latency recording with UAD plug-ins and provides studio-grade conversion up to 24-bit/192kHz. The unit shows minor cosmetic wear consistent with normal use but functions perfectly and includes the original power supply.