Thank you for viewing. As the title says, I am selling a Roland audio interface, the QUAD-CAPTURE UA-55. The following is a product description. The QUAD-CAPTURE is a 4 IN / 4 OUT USB 2.0 audio interface with a maximum of 24bit / 192kHz, inheriting the high-quality "VS PREAMP" design, the low-latency "VS STREAMING", and the "AUTO-SENSE" that allows you to set the optimal input level with one action, which were well-received in the OCTA-CAPTURE. ・Equipped with two "VS PREAMP" microphone preamps, which have received high praise in the OCTA-CAPTURE. ・Employs "VS-STREAMING" technology for ultra-low latency and stable operation. ・Equipped with "AUTO-SENS" which can automatically set the optimal input level. ・Supports USB 2.0 and USB bus power, allowing it to be used in any situation. Although it is a discontinued product, I think it is a standard item with many loyal fans. The condition shows signs of use, but it is a fairly beautiful item without any fatal scratches. There are no functional problems. Thank you for your consideration.