Signal Switch handles the utility moves you reach for constantly on every mix, but makes mono checking more useful than a simple sum-to-mono button. Full Mono compensates for the loudness change created by summing left and right, so louder or quieter doesn't bias the comparison — you hear what actually happens to the stereo image when it collapses, not just how much quieter it got.

Mono Maker takes a more surgical route, collapsing only the low end to mono below an adjustable crossover, so bass tightens up and translates reliably in mono while everything above the crossover stays fully stereo. Gain, phase invert and metering cover the rest of the routine checks you'd otherwise reach for a separate utility to do. It's permanently free, with no licence file required.