This is an effector preamp that incorporates a vacuum tube and can produce an amplifier-like sound. Based on the circuit of a Dumble clean channel, its brilliant resonance will get you hooked. Also, the tone knob and toggle switch work well, allowing for a variety of sound creations. However, it is only a preamp, so it does not create distortion like a distortion pedal. It serves to build the foundation of your sound. There is no noticeable damage, and it is in very good condition. Comes with the box and manual. ※ It takes 1-2 months to order from the manufacturer, and it's rare to find this item in auctions, so if you're looking for one, don't miss this opportunity.