The MIDI Solutions MultiVoltage Merger merges all MIDI messages appearing at its two MIDI inputs to its two MIDI outputs. All MIDI message types are merged, including System Exclusive, MIDI Clock, and MIDI Time Code messages. A fast merging algorithm ensures that all MIDI data is processed accurately with the minimal possible delay. The Merger is MIDI-powered, and requires no batteries or power supply to operate with most MIDI products. A MIDI indicator LED lights up when the product is powered and flashes when MIDI data passes through it. MIDI Solutions MultiVoltage products are compatible with both the original 5V and new 3.3V MIDI specifications.