Bi-amping with Rotel RA 971 MK2 & RB 971 MK2
I'm having a little quandry and hoping that someone will be able to help.
I currently use a Rotel RA 971 MK2 integrated amp with my B&W DM601 S2's (soon to be replaced with Dali Zensor 3's), and have been offered a 'matching' RB 971 MK2 power amp for very good money. The intention was to use the amps configured to bi-amp the 'speakers, but I've just been having a flick through the manuals (I've put links to both at the end of the post. Outputs haven't changed from mk1 to mk2 btw) and it appears that the RA 971's output is rated at 60w, the RB's at 70w.
With the amps having different outputs, whichever elements get the RB 971 powering them will get more current, right..? There's no way to attenuate the output of either amp and balance their outputs, so this means that the two units are incompatible in the configuration that I want to use them...? It seems a bit weird if so, as all of the other manufacturers I know of, that offer integrated amps with a matching power amp, engineer them to be able to work together, and offer a clear upgrade path.
If someone could help to shed light on whether my thoughts are on line, or not, it would be very much appreciated!
PDF manuals for both units are here- http://www.rotel.com/content/manuals/ra971_eng.pdf http://www.rotel.com/content/manuals/rb971_multi.pdf