Joyo R-06 OMB Looper / Drume machine pedals equipped with looper and drum machine looper mode, drum mode, looper and drum mode. There are 3 modes. (1) Looper mode (capable of multiple recordings) (2) Drum machine only (3) Looper & Drum Machine Mode: Recording and playback can be easily controlled with one foot switch. LOOPER knob can adjust the background volume. The DRUM knob can adjust the volume of the rhythm sound. The GENRE knob has a rhythm pattern (7 types). BAR knobs have drum pattern selection. Looper mode features automatic alignment and counting functions, allowing for 40-minute periodic recording and unlimited overdubbing In drum mode, you can choose a pattern from 7 different genres/7 types of beats, and the TAP TEMPO button can set the speed. In addition, you can fill in at the end of the drum pattern to create a variety of band sound by yourself. The 9V center negative adapter is for the cost. Please note that the R series does not operate with 9V batteries.------------------------------------------------ Dimensions: 109 x 67 x 48mm Weight: 248g Input Impedance: 2.2MΩ Output Impedance: 100Ω Rated Current Consumption: 100mA Working Voltage: DC 9V Center Negative ----------------------------------------------------