I am a new owner of a SE84C Select. I am blown away with it. Not quite enough power so, I will be adding a second to use as mono's. The quality of the sound has more than impressed me. I have heard that the Zen Select is a rather large improvement over the standard SE84C. It's cost is $695. I have heard that no one has ever returned one due to being dissapointed with the sound quality, only due to not enough power. Adding a second amp (either now, or in the future) will drive most reasonably efficient speakers to a decent level.