So you want breakup on the clean channel of an Orange 😲 WHEN YOU HAVE SUCH A GOOD DISTORTION CHANNEL!!
I would beware of the Rockerverb 50 if u just want to break up the clean channel because it will need to be maxed out to break up ( i know from experiance testing to find out if i could break up the clean) Even on 10 with a humbucker equipped guitar its still a slight crunch.
However the distortion channel on the rockerverb 50 is #### amazingly epic and only gets better as you turn it up! I would say get a rockerverb 50 and forget the idea of diming the clean channel.
However if you want to a clean channel overdrive I would go for the rocker 30 (which has no reverb tank) which you may be able to break up, I don't know much about the rocker 30 but it should be basically the same as the Rockerverb 50 just with less output.
Also the AD5, Tiny Terror Combo or head as well as all the lower wattage Orange's are great choices for studio work as well as live if you mic them.