MStereoProcessor from MeldaProduction is a multiband stereo analyzer and enhancer plug-in, useful for mastering and mixing. It features four bands and three crossover types, with each band providing width control and an exciter for delivering additional clarity. Analyzers provide an accurate view of the stereo output profile, focusing on width and stereo image integrity, while audio previewing checks for mono compatibility. Additional functions include 16x upsampling, M/S and surround support as well as other channel modes, A-H presets for easy comparisons, and an integrated help system.