The Tri Parallel Mixer is surprisingly compact considering the level of functionality it provides, while its intuitive controls and I/O make it easy to operate.
Use it to switch between or mix up to three separate effects loops. Send a guitar or other instrument out to three separate amplifiers, or input three separate instruments to switch between or mix to a single output. Mix effects in parallel to create sounds and allow for options not possible when using effects in series (one after another).