I wonder why it took so long for amps to get to the high gain territory. So very guitar amps were designed for clean sounds, then people discovered that they distort when at max volume - power amp distortion. What happened next? When was pre-amp distortion invented? From what I understand, it's the pre-amp distortion that allows all this JVM-level high gain. JCM800 was pre-amp distortion for the most part, wasn't? Players were always shooting for more and more gain, and they used stuff like Tubescreamer to push their JCM to get more gain. So why did it take so long for Marshall and other amp makers to get get to DSL/JVM levels of gain? I just wonder why they didn't make a truly high-gain amp in the mid-eighties? Is it because of technological limitations at the time, or is it that they simply didn't see the point in super-high-gain?