Actually, not necessarily a true statement. Because it already has an internal amp powering the bass, the Summit does not benefit from Bi-amping. But it does not follow from this that the Summit does not benefit from Bi-wiring. In fact, the addition of the internal amp may very well mean that it benefits more from Bi-wiring than previous ML's. Notice I said "may." I haven't done the testing to determine whether it does or does not. I am simply saying that the presence of the internal bass amp doesn't necessarily mean it won't benefit from bi-wiring. The Summit manual does state that Bi-wiring isn't necessary, but doesn't really address the issue of whether or not one may notice a perceived benefit in doing so.