Sure there are some benefits, but is it necessary with cheaper speaker system to put so much money in to processor + amps (4k£?) as this isn´t dedicated room either with room treatments? The professional people in the industry with most knowledge always says in this order:
A) put lot of money in to high quality speakers with great controlled directivity (Arendals, Kefs, Revels, JBLs etc) with the dynamic capabilities to suit your room.
B) spend money for room treatments as room plays so big role what you hear - 10k£ processor with best room eq can´t fix all issues even if the marketing guy claims otherwise. There is articles showing cheaper speakers sound better in treated room than lot more expensive ones in non treated room. This again shows how important it is if the end goal is best possible sound quality. The below thread first post should be sticky:
I've always found it odd that the forum is full of posts about kit upgrades, but by comparison there is very little written about room acoustics. In fact, the words "room acoustics" often get interchanged with soundproofing, and of course these are two very different subjects. It amazes me...
www.avforums.com
C) good receiver/processor with effective room correction software that can fix room modes (below room transit freq ~300-500hz), where the treatments are less effective. It´s then up to person if he wants to opt for full range correction or something between.
Also as we have seen there is many things in play with the processor vs. receiver subjective sound quality differences. Done in blind test method would person be able to pick the processor ~9 times of 10 over the receiver with same amps used on both level matched? We have science supported objective measurements showing the processors aren´t measuring any better to same brand flagship receivers so the claims that processor would sound night and day better is likely more about placebo effect and expectation bias which example Floyd Toole has talked many times when reviewing gear. Mind can play tricks if you see products which you compare and you already have some idea which sounds better cause everyone at forums says it must be so and you are thinking "it must sound better cause it costs so much more".