I don't know, the 1050 never had trouble with power, and the 1070 actually has more when you look at all seven channels - it may "only" offer 69 watts with two channels driven, but you can drive the other five channels at the same time and still stay around 65W. Many receivers rated at 100+W drop to the same level when all channels are driven, which is a more realistic condition for a surround receiver.