Integrated Amp ideal for my B&W685s

[Pholo]

Hi All
I'm an inexperienced forum member still rooted at entry level hifi components. I've a Harman Kardon PA2200 & Rotel RSP980 processor plus 685s S1 bookshelves. How can I improve on this system to get the best out my speakers? Should I change to floorstanders or go for another amp? Please I need some guidance.
Thanks
Pholo

 

[Nidri]

 

[dean]

 

[CAD]

 

[Brian Bester]