Narrowly defined group eh. There seems to be a sizable number or threads and posts to the contrary. I've seen quite a few than say their $20 E5 performs better than the E7 and have reverted back. I'm willing to bet real money the $65 Cmoy v2.02 kills the $100 E7 whether using the headphone out, line out or whatever non DAC related out you can conceive of. I really don't understand what your point is. From your own words it sounds like the Cmoy is better than the E7 and cheaper to boot. So why would the OP want an E7 if they aren't going to use the DAC?
The point of my posts are not to compare the E7 to another amp, but to point out the inaccuracies in your assertion that the E7 is only good when also used as a DAC. I can appreciate that we are all trying to help one another, especially since most of these products are only available online so there are very few chances for someone to try something in person before making a purchase. I am certain your desire to point out issues you perceived with a product in order to prevent someone from potentially making a bad purchase is rooted in good intentions. At the same time I hope you are receptive to the evidence that I've provided.
There are different amplifier products on the market precisely because people have different needs. Depending on specific needs, the E7 is not always the better choice. Isn't this obvious?