There are minor scratches from use, but it was working fine until just before. [120 Units Worldwide] FMR Audio RNC1773 BACK TO BASICS Includes: Main unit, power adapter This is a rare, upgraded model suitable for recording, mixing, and mastering, making it difficult to obtain. I hope to pass it on to someone who is looking for it. -------------------------------------------------- Limited edition of 120 units worldwide Differences in versions: 'E version' which upgraded the RNC1773 (Op-amp change) Further upgraded, the 'BACK TO BASICS version' was sold as a limited edition of 120 units worldwide. (In addition to the op-amp change, the power supply was improved) "One could say that the truly perfect RNC1773 has been completed." From the Umbrella Company product page Compared to other versions, It has a thicker, clearer core, is solid, and the overall sound is clear and distinct, with even greater resolution, etc. It is considered to be a "significant upgrade in sound quality." Equipped with two modes: "Normal Mode" which applies compression as textbook, and "Super Nice Mode" with three stages of compression. Especially, the Super Nice mode seems to be the secret of its popularity. The sound quality rivals that of rack-mounted units, and it is also very compact and portable, making it ideal for mobile use. Despite its low price and compact size, it is of very high quality, and is a full-control, authentic compressor that rivals rack-mounted compressors/limiters. #RNC1773E #Compressor #Comp universal audio Grace design AVALON Golden Age Project API NEVE SSL aurora audio vintech audio warm audio heritage audio bae 1073 RUPERT NEVE DESIGNS Millennia SSL