I was looking at the various Torus models today, and I noticed that the 20 amp models are much heavier than the 15 amp models. If you look at the 5, 10, and 15 amp models, each larger model is roughly ten pounds heavier than the next smaller model. For example, the 10 amp is about 35 pounds and the 15 amp is about 45 pounds. And then suddenly the 20 amp is 90-something pounds, fully twice as heavy as the 15 amp model.
Is the 20 amp just a completely different beast than the lower powered models? Is there some kind of significant performance difference between it an the lower models? If I only have a 15 amp line run to my audio system, is there any reason to prefer the 20 amp unit (with the appropriate 15 amp to 20 amp power cord, obviously)? Thanks for helping satisfy my curiosity!