Luminous knobs for checking on the dark stage Strong and lightweight aluminum die-cast chassis 9V center negative DC supply,90mA current draw Weight : 174g/ 6 oz Dimensions : 94(L)×51（w）×53（H）mm3.7(L)×2.0（W）×2.08（H）inches A crystal clear river flowing, transparent. The Rivulet design concept ! Old-school Analog Chorus has always been warm but it was hungry for dynamic completion. NUX’s modern-tech DSP yields a perfect combination of both worlds: analog and digital.To achieve all of the Rivulet Chorus objectives, our engineers had to developed an algorithm that mimics the principle of BBD chips--the key component of Analog Chorus effect.Rivulet’s low-frequency oscillation provides the traditional analog chorus tone discerning ears have come to expect in a true chorus pedal. Dynamic tone and noise elimination capabilities put Rivulet into a completely separate category from cheap analog pedals.Quality-grade BBD chips in large quantity have become incredibly rare, so this method isn’t practical for making an affordable analog chorus device.