I just ordered the 7ES!!!! I cannot wait for UPS to arrive. The only thing I know is: 120W X 7 All the latest modes Composite ->> S Up-convert RM-TP1 Touch Panel 2 way LCD remote, + extra remote 3 zone, 2nd room with pre-out with E-volume (what is e-volume), 3rd room 2ch pre-out, with full 7.1 channels maintained in main room. All the goddies the 5ES (well I am assuming this) had and more. Check out www.sammans.com then ask for Joe or Al. They have provided me with great prices, and great service for over 10 years. The 4ES has 110WX7, all the modes, only 2 zone, 1-way remote Composite ->> S Up-convert I will post the detailed specs on the 7ES next week after my unit arrives if Crutchfield has not posted them.