Hi guys, Like the title says: What is the best way to achieve a clear clean smooth tone with lots of sustain, besides a compressor? Distortions and even profiles with lots of gain give mostly a kind of cracking sound. To avoid this I turn my treble knob on my Les Paul all the way down. That leaves the gain but in a smoother way. But at the same time it sounds darker. So then it's back to the Kemper to increase treble but I guess there are other ways... (Or do I really need an original Les Paul '59 for this... ? 
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I wonder what tricks inside the Kemper can help.