Features: (1),Drive, Volume, Tone Controls: pretty standard fare one most overdrives for letting you dial in the gain, adjust the output volume, and find just the right tonal balance. (2),HP/LP Switch: The High-Peak function gives you increased distortion and low-end, thickening up your sound for a more “British” flavor. The Low-Peak mode gives you a more accurate rendition of your sound with very little coloration of your tone (3),9-Volt or 18-Volt Power: Use a standard 9-volt adapter or plug in an 18-volt power supply for even more headroom. (4),True Bypass Switching -Dimensions: 94(W)MM x 39(L)MM x 32(H)MM -Weight: 125g Package list: 1* Mosky Obsessive Overdrive