This amp is renown for it's high gain sounds, which mostly reside on channels 3 and 4. But the other two channels are fantastic too. Sparkly cleans, reminiscent of a Fender Deluxe/Twin reverb, sounds fantastic with reverb or delay. You can easily get classic rock tones on those first two channels and then switch over to 3 or 4 for a more modern sound.
To sum it up, it's more versatile than it seems. And the build quality is fantastic. A lot of care went into this thing. If you can afford it, it's a no brainer!