Could you run a tubed non-sunn head into a solid state sunn and still get the job done? I saw a guy play what looked like an orange rockerverb through what looked to be a coliseum lead, or maybe he had the sunn as a back up? I am not quite sure. Looked pretty sweet though. If you can do this, would you be able to get effects (like reverb) when you use it as a preamp if the tube head doesn't have a built in reverb? Let me know if I'm not making sense haha
Maybe you know this, and sorry infer that you don't if in fact you do... but, you do know that you can't just plug the
speaker output of one amp into another amp, right? You have to use a
preamp out on the first amp, if you use the speaker output you are asking for all kinds of trouble. I don't think the Rockerverb has a pre out is one of the reasons I'm mentioning this.
As far as reverb, if you used the Concert as a slave by using the power amp in you would bypass the reverb in it, and while you could probably use the effects loop on the Rockerverb to send a signal to the Concert, that would also bypass the reverb on the Orange. Of course, you would also have to have the Orange plugged into a speaker cab or a dummy load also, and if you used a cabinet the Orange's reverb would work through that.