I think we all know of many builders out there who build their own take on an "old" version of a classic amp, like a Plexi, JCM 800, Blackface, Tweed, Dumble, etc.... So many amps out there saying they do those sounds and bring back the old, tried and true tone built with the best parts and the same or very similar circuit. All these classic amplifier designs are at least 20 years old and in most cases older. Will there ever be a big advancement, a completely fresh concept. A completely unique one that secure its place amongst amp history? Or have we maxed out, for the most part, the way we can manipulate the amp to sound?