"..Leave the amp as i set it! That's my amp and I'm setting it the way i wish it!...That's the way Chuck Berry plays it, you understand?!" From the documentary "Hail! Hail! Rock n Roll!" by Taylor Hackford, courtesy of Image Entertainment. All copyrights belong to their respective owners. I took this clip from Gibson's website and put it on youtube. It's a great movie. So see it for yourself.. like now..