Sonarworks SoundID Reference for Speakers & Headphones with Measurement Microphone This is a set including the plugin, measurement software, and microphone. It supports calibration for both headphones and speakers. Purchased in March 2025, it has only been used once for measurement and is in near-new condition. All accessories are included, and the license registration has been deactivated. Price negotiations are not accepted. Although it is a beautiful item, please understand that it is a used product before purchasing.