Tested and working. The "Riot MINI" is a space-saving version of the "Riot Distortion," which delivers high-gain distortion as its name suggests, while also boasting a sensitive touch response. The mini switch allows you to change the mid-range characteristics, and it's 18V compatible, allowing for a wider headroom. There are no noticeable scratches or stains, but please understand that this is a used item. Thank you. Specs ■FEATURES DISTORTION, TONE, LEVEL controls 2-position voicing switch True bypass ■SPECIFICATIONS Input Impedance: 1M Ω Output Impedance: 600Ω Power Connector: Center pin = 2.1mm / Sleeve diameter = 5.5mm Power Voltage: 4-18VDC (Standard voltage 9VDC) *Battery operation not possible Maximum Input Voltage: 20VDC Reverse Polarity Protection Circuit: YES Over Voltage Protection Circuit: YES Current Consumption: 8mA Size (cm): 4.63 (w) x 9.78 (d) x 4.8 (h) Weight (g): 166 - Model Name: Riot - Controls: VOICE, TONE, LEVEL, DISTORTION - Accessories: User guide, box - Bottom: Velcro attached Thank you for viewing.