I have the Pio 1018 and the Take classic speakers. I will be upgrading to the Energy RC-10's with RC mini center up front. I see the Emotiva XPA 3 Audio Power Amplifier is on sale for $499. Is this a worth while upgrade for my front 3 or will the difference be subtle (overal clarity and crispness of sound, and max volumes attainable). I am sort of new to this but have bitten by the bug, hardAny input at all is welcome, thanks.