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On an acoustic drum set, open and closed hihats cut each other off because they're on the same cymbal, and it's a feature, not a limitation. Samplers, which can play both sounds at once, artificially impose this feature as a "mute group" - sounds which are programmed to cut each other off.

With the Mute Group Signal Selector, you can use this trick for any audio, as well as with CV/triggers/whatever, in which such mutual exclusivity is a virtue, rather than having overlapping sounds. It recreates dj-style cue point jumping, beatbox-like chopping, and mono-synth-ish behavior.

On this device, Mute Group A consists of 8 channels of ins & outs, with a column of trigger inputs to select which is active (the rest are muted). The Merge A output can continuously outputs whichever is the active channel. Mute Group B is a secondary collection of ins, outs, and trigger jacks as well as a Merge B output, but with 5 channels. All together, there is always one A and one B channel active, simultaneously. You don't have to use both groups or all channels in a group.

Instead of audio, send envelopes into a mute group so they can control VCAs for stereo signals. Send triggers into a mute group so you can alternately direct various sequencer lanes to a destination. Use it with cv to cycle amongst modulations. When you dig into it, there's a lot of interesting things you can do...