SONAR X1 Producer Expanded is an enhancement for Sonar FX Chains. This program allows users to customize control options for their modified plug-in effect combos. These plug-in effect combos can host over six buttons and six knobs that can individually be assigned to any plug-in parameters supported by Chains.
SONAR X1 Producer Expanded converts the ProChannel strip into a modular system wherein new processors developed by Cakewalk and other developers can be included. The Saturation Knob is one of these processors. Saturation Knob is a simple module and a distortion modeler included in this application. Users can also upload audio files to SoundCloud directly from the digital audio workstation (DAW). This application also supports MusicXML, which is a universal format of sheet music that allows the users to open projects made with this application using any music notation programs such as Finale and Sibelius.
SONAR X1 Producer Expanded also has a browser expansion that makes use of the drag-and-drop method for incoporating synthesizers in various projects, and putting audio or musical instrument digital interface (MIDI) loops from the projects into the media library. This application also organizes input and output level faders and meters, as well as the global and plug-in bypass buttons.