Hello Head-Fi Community, Oh... My... God... The first thing I thought of when I put on my UE 10 Pro's and plugged them into the SP1000. Now what is interesting is I just ordered a pair of UE 18 Pro's. It's been 11+ years and time for an upgrade. I want to get settled in before posting a full review of the SP1000 and I'll add differences for UE's, Sennheiser's HD800 and some different cables. However, I can tell you this DAP is heavy... I would say it feels like 2 lbs in your hand and it's gorgeous.