This amp came from an estate in NJ. We do estate clean out services and don't know the full history of this item. I'm a drummer and not a guitarist, so I only did a partial test with a cheap guitar I have laying around. (see video) The first input doesn't have a signal, although a few times I could hear a signal when plugged half way in. Input 2 has a full signal as you will hear and the amp is pretty loud. The clipping knob has a dirty pot, but works and has a fuzz type effect. I only tested what you see in the video. Cosmetically it show signs of wear from age and use. I do not know if all the parts are original or if it's ever been worked on. The pictures and video are part of the description, so please look closely and carefully to see what you are getting and the condition. Please check our other listings!