The FL-301 was one of the first low-voltage compact flanger pedals available to the market. The pedal runs on 18v power (or two 9v batteries) to produce a large range of modulation effects from subtle chorus to wobbling vibrato to a wide, tape-like flange. The pedal uses analog circuitry based around the Panasonic MN3207 BBD like many of the best flangers of the 1970's.
This pedal shows its age, but functions perfectly. Ships safely to you the next day!