What closed headphones have a similar sound to the HD650?

If money is no object, then what is the best portable amplifier/DAC out there? 

Just received the Shure SE 535's, but when I plugged them straight into my iPod I was a little disappointed. I don't have a portable AMP/DAC, but curious to hear what these could sound like I plugged them into the Schiit Valhalla and Bifrost Uber. Very happy with the result! Detail was better...

After about 6 months of frequent upgrading I have been settled with the HD 650/Bifrost/Valhalla for about a year now. I really enjoy my setup, but I'm starting to get that urge to upgrade again. The problem is I don't really know where to start, as I think the HD 650/Bifrost/Valhalla really...

Any suggestions for new monitors? I would prefer something that has about the same amount of bass the A5+ provide on their own without a sub, but with a little more detail and clarity in the highs. Budget would be around $800 but would be willing to go to $1000 if that's what it will take. I...

I am currently using the HD 650 with the Bifrost and Valhalla, and I love the sound. However, I am thinking about upgrading to the LCD 2 and Lyr. I have heard that the LCD 2 is sonically similar to the HD 650 only better in pretty much every regard except for maybe soundstage. What do you guys...

While sitting at my desk my audio setup is as it states in my signature:   MPB / USB / DAC / RCA / AMP / HEADPHONES   Nothing controversial here, right? Anyway, I recently purchased a pair of cans with a longer cord that allows me to lay on my bed and listen to music, rather than at my...

Just bought the A2's and I am a tad underwhelmed with them, although I understand they require about 50-75 hours of burn-in. I also picked up the Polk PSW10 sub and Audioengine D1 DACbut still feel something is missing in comparison to my old Klipsch Promedia 2.1 system (which sounded phenomenal...

Do you guys think it is worth it? I live in a small apartment building and there is a garden apartment below me, so I have been a bit deterred from using the sub on the Promedia 2.1 system (although I recently purchased a large foam panel from Auralex to help with the floor vibrations - no...