Introducing the [Cu] Copper Overdrive/Distortion Effects Pedal. This high quality, 100% analog design surpasses the needs and wants of professional players and those who must have full control of their distorted sound. EFE has take extra steps to ensure uncompromising reliability. The pedals are designed and built with the highest quality components available today. Furthermore, each [Cu] is hand built and tested by an experienced engineer and a group of dedicated musicians.