Sonarworks SoundID Reference is an excellent software tool for professional audio engineers, musicians, and producers looking to optimize the sound of their speakers and headphones. The software comes with a measuring microphone that allows users to create a personalized calibration profile for their specific audio setup, which can then be applied to any audio source, resulting in a more accurate and consistent listening experience. The user interface is intuitive and easy to navigate, and the software provides a wide range of customization options to tailor the sound to your preferences. The software supports a vast array of headphones and speakers, making it a versatile tool for a variety of audio applications. Moreover, I think the price of each SoundID edition is worth the price. (PS, I got SoundID Reference for Headphones and Speakers with measuring microphone. Overall, Sonarworks SoundID Reference is an excellent investment for anyone serious about achieving the best possible sound from their audio equipment. It's simple to use, effective, and can significantly improve the accuracy of your audio monitoring, making it easier to produce high-quality audio content.