I agree with the other posters, the Lyr can definitely work with the HE500, but getting really good sound required - on my system at least - a bit of tube rolling and some patience. I am low on patience. I like to plug-play-and-forget. The Lyr is quite a good bargain. The Soloist is clearly better, but 2x the price. In fact, the short coming of the Lyr may not have been so obvious to me if I had not kept comparing it to the amp section of my Benchmark DAC1. As some have said, it's hard to trounce the DAC1's amp section for under a grand.