The Ashdown Compact Sub Harmonic Generator is a simple powerful way to add extra low end to any mono signal. Sub harmonics are tones an octave or two below the fundamental frequency of the note youre playing. The Ashdown Compact Sub Harmonic Generator synthesizes these in real time and its simple elegant design allows you to control the relative volumes of your original dry signal and the hefty sub sounds this pedal creates. Part of Ashdowns all new PRO-FX ABM range the Sub Harmonic Generator is a compact pedalboard-friendly unit. Like the rest of the ABM range it features eye-catching vintage styling and simplified standard 9VDC negative centre power with a 30ma draw so itll work with most standard pedal power supplies. Easy to set up easy to power the PRO-FX Sub Harmonic Generator is a must-have for anyone seeking extra low end power. Ashdown PRO-FX guitar and bass pedals Keeping it simple. Ashdown is a company that knows what working musicians need. Great sounds and great control at a great price. Their PRO-FX range proves that taking the best bits of some classic boutique pedals and distilling them into a series of sleek versatile stompboxes. Long-time Ashdown electronics engineer Dave Green spearheaded the designs which all feature industry-standard power supply-friendly 9VDC power requirements with low 30ma draws. For the Sub Harmonic Generator Dave took the Ashdown ABM amp ranges generator added the clean blend functionality and condensed it all into a traditional sturdy stompbox. In doing so he created a best of both worlds scenario with a fantastically controllable sub pedal that wont take up your whole pedal board. Specifications Power Input Voltage: 9V DC Power Input Connector: 2.1mm barrel connector (Negative centre) Power Consumption: 30mA Enclosure Material: Steel housing with anodised front Input connector: 1/4″ Jack Output connector: 1/4″ Jack Controls:Sub Harmonics Level Clean Level