Thank you very much for viewing. I am selling the Prism Sound audio interface, Orpheus. 【Reference Video】 Prism Sound Orpheus Review https://www.youtube.com/watch?v=CKknJirPi8A ・There are no major scratches. There are some scratches due to aging. ・Since the time of purchase, the volume knob on the unit sometimes doesn't reflect the adjustment. (I was operating it from the computer, so I didn't use the volume knob on the unit.) ・Connection to the computer is Firewire 400. (I used it with a mac mini after converting Firewire to 800 and then to Thunderbolt 3.) ・Regarding macOS, I was using the internal mixer on OS Catalina. Please understand this before considering a purchase. ・Apple's genuine and Unibrain Firewire to Thunderbolt conversion kit is also included. ・In addition to 8ch analog input/output, it has a maximum of 10ch digital input/output (S/PDIF + ADAT). Product Specifications <Analog Input> ・2 x Mic/Line/Inst ・2 x Mic/Line ・4 x Line <Analog Output> ・8 x Line <Digital Input/Output> ・S/PDIF (2ch) / ADAT (8ch) / ADAT S/MUX (4ch) Quantization Bit Rate: 16/24bit External Dimensions (including rack mount and feet): 483mm (W) x 50mm (H) x 290mm (D) Weight: Approximately 3.7kg Power Supply: AC90~250V, 50/60Hz, 35W 【Other】 I am not negotiating individual price reductions, but I am lowering the price from time to time, so please consider it at your convenience. Regarding shipping, I request that it be sent with the recipient paying the shipping costs. Thank you for your understanding and consideration.