Better Amplifier to Sound System

Hello I try to search better Amplifer to sound system. But i dont have any ideas. I think i can use amplifer from passat Mansony he Have 300W Superb 280W. But 20W more its no very much. 

So amplifer form Passat B8 Superb III can run on Superb 2 ? Plugins is this same. Amplifer from Superb 3 have 610W on Passat 650W Arteon 700W.