The main issues I see with trying to get the Axefx Ecstasy models to do the plexi mode is too many gain stages. Even the blue has one too many gain stages for the Bogner plexi mode, plus the extra gain stage is set up like a hot rodded JCM800. It would be cool if Cliff chimed in here to enlighten us on the real deal.
It's not just the extra gain, it's the way the gain stage changes the tone and dynamics. Try it for you self if you like. Take the JCM800 and turn the input trim down and see if you can get it to sound and feel like the plexi model. You can get close to the clean tone but once you start overdriving the circuit, all bets are off.Wouldn't decreasing the input trim solve the extra gain stage issue?