Additional amplification?

I am considering adding a seperate 2 channel amp to my current multichannel setup, which is: Outlaw 950 pre/pro, Marantz DV 8300 universal player, Rotel RCD 1070 cd player, Rotel RMB 1075 (125wpc X 5) amplifier and Monitor Audio Silver S10s (fronts), Silver center and Silver S2 surrounds. I listen to music about 85% of the time including DVD-A/SACD. Will a seperate 2 channel amp make a difference? I like a crisp, somewhat bright sound in my music. Considering Rotel RB 1080 (205wpc), Parasound 1500a (200wpc. Suggestions and opinions would be greatly appreciated.