The MOOER 'Liquid' is a pocket sized Digital Phase pedal crammed full of cool features. The large control knob allows you to choose from 5 very different Phasers which range from subtle vintage phase to outright wacky and extreme modulation.After selecting which type of Phase you want to use, navigate swiftly to the three position switch to choose which wave form suits the sound you're after. Round, triangular or square. Features:5 different phase effect types.3 selectable wave form types:Round,Triangular or Square shape wave forms.Speed,Color and mode/mix controls.With true bypass footswitch and LED indicator light.Micro size and exquisite,full metal shell, portable and durable. Specifications:Signal Input:   1/4” monaural jack (impedance: 470k Ohms)Signal Output:  1/4” monaural jack (impedance: 100 Ohms)Power Supply: AC adapter 9V DC (center minus plug)(not included)Current Draw: 130 mAPackage Size: 12 * 7* 6cm/ 4.7 * 2.8 * 2.4inPackage Weight: 190g / 6.7oz Note:1.Power adapter is not included.2.Please use the 9V power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly. Package Includes:1 * Guitar Effect Pedal1 * User Manual(English)