Cool starter rig - but those are not starter speakers those are pretty good I have heard them. Anyone that builds, services, works on robots is super smaart. I can tell you that B&W's will love some tubes inserted anywhere and repay in kindness 10 fold. They're voiced for tubes. Gets some tubes in that system and you will look me up and thank me profusely ;)
Here you go right after your pre/pro and before your amp is a nice reasonable priced option for you that will knock your socks off... Insert a Class A Single Ended Triode Output stage that is pretty much what a modder would build right into the back of your pre/pro but this one is simple /external so just plug and play and its not expensive considering it will make your HT/stereo sound great. It was my first real mind blowing add I made when I had an all solid state front end.
Its called a Decware ZSTAGE. You find them used on the gon, the bay or even the oem Decware forum site for $300 - $400 and I promise you will love it. B&W w/all solid state given a proper insertion of tubes = happiness :)