What AV amplifier for 4 x b&W + centre

Thank you for all your help to date
I went to my local dealer this morning and to my surprise they have Classé stereo amp + 803 d3 in their studio    I fell in love immediately and ordered 5300    Hope 5 channel will sound same good 

I will be pairing the amp with my old Arcam 850 ( serving as processor )    I am quite nervous about this.  
I feel that I have to start looking for a new processor 

if any of you have any suggestions please let me know 

many thanks 

tom 

Questions. Do you have a budget in mind? Do you need support for 4K and/or HDR? Support fo Dolby Atmos? Room correction?

Thank you.  Definitely 4K 

I have no intention adding more speakers therefore most likely Atmos is not a must.  
Room correction sounds like a nice think to have.  
I like sharp / clear sound and use the system 50/ 50 music / HT 

would 10k be enough to spend on up to date good sounding processor ? 

 A B&W sub adds a lot to the sound - I like mine although I have floor speakers with decent bass - still the sub adds something in my humble opinion...

Just ordered Velodyne DD 15+ 

only the processor left to sort out 

thank you all for your help to date