TC Electronic Polytune 3POLYTUNE 3 Ultra Compact Polyphonic Tuner with Multiple Tuning Modes and Built In BONAFIDE BUFFER Ultra compact polyphonic tuner gives you fast, accurate tuning and a high quality tone tool in a single unit Quickly get in tune with polyphonic, chromatic and strobe tuning modes Built in all analog BONAFIDE BUFFER circuitry preserves your tone through long cable runs and convoluted pedal boards Polyphonic tuning lets you tune all your strings at once