PreSonus QMix-UC is a mobile application designed for iPhone that transforms your device into a personal monitoring controller for StudioLive Series III digital mixers. This free app is tailored for both front-of-house engineers and musicians, facilitating an intuitive way to manage aux mixes remotely. By connecting to the same wireless network as the mixer, users can easily control mix send levels, panning, and create up to four channel groups, enhancing the live performance experience.

One of the standout features is the 'Wheel of Me,' which allows users to adjust the relative levels of customized channels with a single control. While the app supports a variety of Series III hardware, including multiple StudioLive models, it's important to note that older StudioLive mixers are not officially supported. Overall, QMix-UC provides a flexible and user-friendly solution for anyone needing efficient control over their stage mix.