JOYO Classic Chorus. The best choice to touch up with a clear and melodious tone. This Classic Chorus offers lush, rich chorus tones with a warm rich thick chorus reminiscent of the late 80s and early 90s great Analog boxes. Full bodied 12-string sounds and deep clear bell like tones can be achieved. Powered by a 9V Battery or 9V adapter. This is a very well electrically designed and mechanically rugged pedal, at a great price!!!