The Blackstar Dept. 10 Dual Distortion effects pedal has four pro-quality clean and distortion voices running at 250V. Combining innovative design, premium components and the advanced Cab Rig D.I. technology, the Dept. 10 Dual Distortion is a powerful option for a valve distortion pedal and preamp.Dept. 10 is the Blackstar R&D team responsible for frontier-pushing innovation and design. Consisting of a group of engineers who are all also musicians, this team is focused on researching new ideas to help you create your ideal tone.ECC83 valve driven. Runs at 250V like a valve amplifier. Overdrive pedal or pre-amp. Low latency USB for recording, XLR D.I. output. Effects Loop. Cab Rig simulator technology and Patented ISF control. Runs on 9V DC (PSU included). Compact design, stunning boutique style.