I can't believe the EP400 would be that much different than Mojo's 600 when we tested the M22s there. The fuller sound added that extra little bit and I don't think I can live with out it now that I know I am missing just a little. Well it's not really missing, just not out there as much as it is with the Floorstanders.
I am not so sure you would be willing to let go of the A1400. Do any of us have preouts on our receivers? I know I don't.