The S combine is a two-to-one microphone combiner ideal for any situation where an extra microphone input is needed. The S combine is a perfect solution for live sound applications, as well as, fixed installations like schools, hotel meeting rooms and houses of worship. You can use your S combine anytime two microphone inputs are needed and only one is available. Whatever your situation, the S combine will provide high quality and reliable performance thanks to its solid build construction based around the extruded aluminum chassis and oversized rubber bumper feet. ? Two inputs by one output microphone combiner. ? 2 balanced XLR microphone inputs. ? 1 balanced XLR microphone output. ? Ground lift switch for transformer isolated microphone input. ? Large rubber bumper feet. WARRANTY 3 years parts and labor.