PSP StereoPack is a comprehensive collection of four plug-ins designed to enhance, control, and analyze stereo signals in both single tracks and complete mixes. Compatible with multiple formats including VST, RTAS, AAX for Windows, and AudioUnit for Mac OS X, this suite offers tools that cater to various aspects of stereo processing. It includes PSP PseudoStereo, PSP StereoEnhancer, PSP StereoController, and PSP StereoAnalyser, each serving a unique role in shaping and refining stereo audio.

The PSP PseudoStereo plug-in transforms mono signals into stereo, creating a natural spatial effect similar to recordings made with dual microphones. This is especially useful for adding depth to MIDI percussion tracks or re-mastering mono recordings to impart a lively and expansive feel. Meanwhile, PSP StereoEnhancer improves the spatial quality of existing stereo tracks with three operational modes, making it ideal for enhancing both acoustic instruments and archive recordings, as well as for mastering new music material.

PSP StereoController is designed to correct common stereophonic errors such as reversed phase or swapped channels, while also allowing subtle adjustments to the stereo image. This plug-in proves invaluable in mastering environments with less-than-ideal monitoring conditions. Complementing this, PSP StereoAnalyser offers detailed measurement and visualization of stereo signals, including level monitoring and oscilloscope views that help identify phase issues and channel imbalances, ensuring accurate stereo sound quality.