Amp and Processor

I apologize in advance for making this post so long.  I'm in a two channel system now with a PS Audio BHK Preamp, BHK Monoblocks, and Focal Sopra 3s.  The right Focal 35 inches from the wall and the left Focal is open ended.  The width of the room is 15 feet.  The Focals are 20 inches from the back wall,  The ceiling is 8 feet high.  I know the speaker placement is not ideal, but I have constraints.  I am using an OPPO 205, PSA Audio Direct Stream DAC and PS Audio Direct Stream Memory Player.  The music is bright and disappointing.  Aside f rom that, I'm thinking of going to a Home Theater system with Focal Sopra 2s, Focal Sopra 1s and a Focal Center speaker.  I will no longer use the PS Audio gear or Focal Sopra 3.  I'm looking for a relatively high end processor and 5.1 channel amplifier.  For the amplifier, I'm thinking of using a Krell Chorus 5200 XD.  I'm stuck on the processor.  I'd love to get the Bryston SP4, but it may  be out of my budget.  I've also looked at Anthem and Marantz.  I still want to hear excellent stereo sound.  Any suggestions?