I just got the emotiva based on what was said about it being an improvement over the magni. Now, I have an audiosource amp 100, but my magni, while had a smaller soundstage and a bit less bass on my HE 5 LE, overall was more detailed than the audiosource. Hearing that the emotiva had better clarity had me courios and the recent sale got me a new emotiva. Some people said upgrading to the emotiva would be a sidegrade. Not so. It is leaps and bounds better than the magni (maybe this shouldn't be a surprise...) and soo much better than the audiosource amp 100. The magni already had the audiosource beat not on power obviously, but on detail. This is with an HE 5 LE using the HE adapter, and a Dacport LX as source with JRiver w/ WASAPI.
Nice! I am loving the HE-5LE on the Emotiva as well! So much so, I am likely going to sell the HD650 in favor of this setup.
And I also have heard the HE-5LE on a friend's Magni, and then on the Emotiva. My impressions agree with yours - it's a substantial improvement. The difference between my NFB-15.1 and the Emotiva is less substantial than the Magni was (NFB-15.1 giving the HE-5LE ~2.5x the power of the Magni after all), but it's still a noticeable improvement.
Edit: I'll add, I actually think I prefer the HE-5LE over the HE-6. At least on this setup - and since I won't be able to upgrade any time soon, I'm happy to stick with the HE-5LE. On my setup, it's a little warmer & smoother than the HE-6, with more up-front vocals (which I love).
Edited by Biscuitz - 6/14/13 at 8:08pm