In the words of Old Blood Noise Endeavors:

Ever inspired by the concept of embiggening sound, Old Blood Noise Endeavors have created a device that goes beyond doubling, offering three overdrives spread apart in time to create three instruments out of one. With three different overdrive voices, and control over the delay time, feedback, and time variation of two of those voices, Beam Splitter creates a trio out of a solo player, in parallel mono, stereo, or true tre-ero.