Re: Which amps have no pre-amp driven cleans?
The Legacy has the single most spectacular clean I have ever heard from an amp. It has a very strange compressed quality that sounds completely different from anything I've ever heard before. This makes up for the mediocre drive channel.
I object to your criticism of the JSX. The clean channel was designed specifically so that Joe could set up any pedal he wanted in front of the amp, and still sound good. The clean is very clean. Some people like that (I do), and some people don't.