Hey Kijanki,
I have no doubt that the HA-2SE would sound great in my soon to be improved system. I just read a review on the Oppo PM-3 headphones that paired the HA-2 (not sure if it was regular or SE version) with these headphones for the review. He mentions that the HA-2 is a very good match with the PM-3 since they make up for some of their cons, subdued deep bass impact and rolled off treble in his opinion,and make them sound much better.
I'm very close to deciding to buy the Aune X7s class A amp since I'm fairly certain it'll sound better than the X1s combo dac/amp because it's class A.
Now I just need to choose a good usb DAC and headphones to go with it. I just started another thread here asking for advice on DAC, headphones and amp.
I'm currently leaning towards the JDS Labs Standalone ODAC RevB with rca outputs($150) but haven't ruled out the HA-2SE. The ODAC has the advantages of using Sabre dac chips and being an 'in-line' type of DAC that I could stash out of sight under my end table.
I'm much less convinced about which headphones to choose since I have no means locally of hearing most of the higher end pairs and need to base my opinions on reviews. If I could afford it, I'd probably buy a set of Stax. I think I'd really enjoy a pair of Audeze or Monoprice planars but they leak too much sound from their open backs. My wife is usually watching tv or on her tablet on our couch only a few feet away from my listening chair. In order to avoid an inevitable firm smack on my head from a frying pan, I've decided to restrict my headphone search to over-ear, wired and closed back models that leak little to no sound.
I'm looking for an accurate and detailed sound that covers the entire frequency range, good bass and treble extension, a smooth and natural mid-range that provides a solid sound stage illusion and the ability to convey the life-like dynamics present on well engineered direct to digital recordings. Not asking for much, right?
I've only identified 3 good candidates so far: Sony MHR-1A and MHR-Z7 and Oppo PM-3. I'm thinking the Sony Z7 would likely match my preferences best but I'm still open to closed back suggestions.
Thanks,
Tim