The Behringer MS-1 is a monophonic analog synthesizer designed to recreate classic analog sounds. It features a 32-key keyboard, two oscillators, a noise generator, an LFO, a filter, and a VCA. It also has an arpeggiator, a sequencer, and a step-by-step programmer. The MS-1 allows for a wide range of sound creation and manipulation, making it a great choice for musicians looking for a classic analog sound.