At times a channel or more may dropout, and the only way to resolve that is by switching off the unit from the rear panel. This also occured before the v4 upgrade.

Watched "Road To Perdition" last night and the sonics were just fabulous. Having the ability to utilize the entire LFE channel (120 hz xover) is an improvement in my system vs throwing away a lot of the signal. The upper bass that my LFE subs reproduce can be very startling at times with huge dynamic range.