Features:Octave effect pedal with drop 1oct and 2oct to get multiple down octave combinations.Can get accurate monophonic and polyphonic shifting octave effect,and reproduces the classic analog octave effect pedalsBy dropping 1 octave and dropping 2 octave,dry sound and time delay, we can get all kinds of wonderful drop octave effectWith control knobs to adjust octave volume, dry/wet ratio, tone and delay time.True bypass footswitch for switching between octave effect and bypass status; aluminum alloy shell, compact and solid design.Specifications:Working voltage: DC9VChip inner voltage: 1.8VChip outer voltage: 3.3VADC SNR: 90dBDAC SNR: 100dBPower Supply: DC 9V power adapter or 9V battery(both are not included)Item Size: 6.5 * 12.3 * 3.3cm / 2.6 * 4.8 * 1.3inItem Weight: 285g / 10.1ozPackage Size: 14.5 * 9 * 6cm / 5.7 * 3.5 * 2.4inPackage Weight: 400g / 14.1ozNote:Power adapter and battery are not included.Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.Package List:1 * Effect Pedal1 * Battery Cable