Thank you for viewing. Purchased new in June 2025 and used only a few times at home, so it's in excellent condition. It works perfectly, and it's from a non-smoking environment. There are no screw marks as it hasn't been rack-mounted. This is an SSL interface, known for its high sound quality. The sound quality is exceptionally clear, and the transparency and three-dimensionality of the mic preamps and AD/DA converters are superb, making it ideal for vocal and guitar recording. It's equipped with professional-grade microphone preamps and a 4K Enhance function, supporting a wide range of applications from recording to mixing. The serial number registration has been deregistered, so the next owner can use it with peace of mind. Immediate purchase is welcome! Box and accessories (power cable, USB cable) are complete! To prevent swapping, returns are generally not accepted. Thank you for your understanding.