I added the 750 to my existing receiver and I noticed a definite difference in the sound stage and detail of music and HT. This was the best upgrade I have ever done next to having Paradigm Ref. speakers.

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Paradigm Studio 20v5-fronts
Paradigm Studio CC-490v5-center
Paradigm Studio 10v5- side surrounds,Monitor surround 3v7-bck surr
Oppo UDP-205/LG 65C6
Outlaw 976 prepro/ Emotiva BasX A-700 amp
Power Sound Audio 15S