I think I unfairly slighted the Utopia's sound-stage in my initial impressions. I don't know if burn in had anything to do with it but I did notice the sound stage opening up a little bit through my HA-1. Yeah I know it's not the best dac in the world but it does give me a way to compare the utopias to my old cans without changing too many variables. I agree with the general assessment that the HA-1 is bright, and the Utopia does not hide it. I think it is to the Utopia's credit that it can handle a brighter than neutral dac/amp and still sound incredible.
Now about the soundstage. I realize this is apples to oranges, but I decided to listen to some of my favorite albums on my turntable instead of my hi quality digital files. I really don't want this to turn into an analog vs. digital post, but the soundstage I had been missing through my DAC was quite present with my analog rig. It isn't as wide as the HD800, but I found it to be an amply wide sound stage with incredible detail. I wanted to make sure this wasn't just the result of a great pressing, so I tried quite a few works on both systems. First off was a wonderful Telarc Cleveland Symphonic Winds record. Then I followed it up with the incredible Dorati 1812 overture. Then I switched gears and put on Led Zeppelin IV. The common theme was that the sound stage was considerably wider in my analog playback system compared to my digital rig. In both analog and digital tests I used the built in headphone amp on the Oppo on low gain single ended. I'm sure part of the disparity is the difference between the different formats. That being said the cans are clearly capable of a better soundstage than my dac is creating. So I'm left with the realization that the Oppo DAC, while still sounding great with the Utopia, is definitely hampering the Utopia's potential. For full disclosure I have a Project 2Xperience classic turntable and I installed a Sumiko blue point Evo III cartridge three months ago.
I wish I hadn't done this comparison. I was overall quite happy with my system. Now I'm contemplating a DAC and or headphone amp upgrade. My poor wallet..It's probably a good thing I don't have a spouse. I can only imagine how far in the dog house I'd be right now.
If you had a spouse, you wouldn't have enough left in your wallet to go down this road to begin with.