So, due to a faulty headphone output on my Macbook, I found myself in need of a USB audio solution. I decided to pick up the Dragon based on the portability and rave reviews ( not to mention the huge price drop from $250 down to $99 ) to power my PS500s.
Full disclosure, I don't have any interest in diving too deep into the world of amps and DACs at this point. In fact, one of the reasons I've always loved Grados is their ability to sound great out of just about anything. With that said, I'm pretty psyched about the Dragonfly. The first thing available when I plugged the Dragonfly in was Take the Power Back by Rage Against the Machine via Spotify Premium - a good but not exceptional source...Whoa. The bass line, the drums, I don't remember this sounding like this.
With Grados especially, I remain a firm believer that headphones make the biggest difference ( after source). But, maybe there is something to all of these DACs and amps you guys are always talking about.
The only downside is that for the same hundred bucks the amp that really piqued my curiosity would have been the Schiit Vali, but the real driving force here was the need for portability and USB connectivity, so the Dragonfly fit the bill perfectly.