I’ve seen a lot of videos and bits and pieces of people Modding their amps usually JCM800s or old SLP/87x and various other Marshall icons to be likeSlash’s #34. With the extra valve. I’m interested to hear what you people have done to your amps and why you’ve done it. I love my JCM 900 but I’ve had it for a long ass time and I’d like to know if any of these mods are possibly universal to any Marshall amp. Kind of make it my own. modding isn’t just electrical it maybe visual as well. so let’s see and hear what you’ve got!