Collected 11 kinds of classic modulation effect. Using 32bit high performance DSP chip Each tone is comparable with other pedals' tone, Full metal shell very small and exquisite and True bypassSpecificationsInput : 1/ 4"monaur al jack (impedance: 470k Ohms )Output : 1/ 4"monaur al jack (impedance: 100 Ohms)Power Requirement s: AC adapter 9 V DC (center minus plug)Current D raw:128 mADimensions: 93.5mm (D) 42mm (W) 52mm (H)Weight : 170gAccessories: Owner 's Manual