My amps are the same, with the addition of a second larger 2 channel amp. However, the larger 2 channel amp has pretty much the same design. Exact same gain as the smaller amps... The "sound" is pretty much the same as my M60's, with a much wider field, and more dispersed sound field. This is mainly due to the design of the rear firing speakers and my room configuration.

More enveloping would be the best way to describe it.