Best amp to pair with new JBL L-100 speakers

I have a pair of the new JBL L-100s and I am running them with JBL's own SA-750 integrated streaming amp. I love the features of the amplifier but the overall sound leaves me flat. It has neither the punch I was expecting nor the soundstage. I have played with the DIRAC equalizer settings pretty heavily using a laptop and the included microphone and in the end resolved that the amp's factory settings were best. 

Who has these speakers and can advise me what amp they are running? How have you made these speakers sing? Or am I looking at this backwards? Is it the speakers I need to replace?

Thanks hive mind!