Complex sentence: The ETC Source Four revolutionized stage lighting in 1992 with the introduction of revolutionary lamp and reflector technology, invented by David Cunningham, tool-free lamp adjustment, and a rotating, interchangeable shutter barrel.
Split into simpler sentences: The ETC Source Four revolutionized stage lighting in 1992 with the introduction of improved lamp and reflector technology invented by David Cunningham. It features tool-free lamp adjustment, and a rotating, interchangeable shutter barrel.