The Dread II sounds more powerful overall-no doubt about that. Sounds more than 25/ch more. The bass is definitely stronger overall. It is a little more dynamic. I think it is aimed more at home theater and its requirements. I must say that the better bottom end, power and dynamics of the Dread II is offset by not being quite as musical overall. I think the Dread I has a little better midrange which fits into the realm of my priorities better overall. The Dread II is certainly a good amp and if I didn't have the I, I'd buy the II. It certainly would serve my purpose about as well. I use Vandersteen's and the bottom is taken care of by sub drivers. So, it's not an issue with me as it would be with some. Hope this helps and if you decide to sell your Dread I, let me know.