I visited the london headphone event yesterday (metropolis studio) and the Edition 5's were there. I asked the ultrasone rep at the stall if he'd heard of this thread or any problems with the connectors - hadn't heard of this thread (and/or headfi?) and hadn't heard of any problems with the connector.
I a/b'd the Ed5 unlimited against my sig pro (oyaide cable) and felt like the Ed5's sounded poor.
Very piercing shrill highs across the board and a scooped out midrange made these hard to listen to. They might be faulty/broken or the real thing since I then heard the ED5 limited and it was much better. But to the rep they both sound the same (subjective opinion) which is probably ultrasone's official stance. And when it comes to burn-in the unlimited's had the advantage, having ~350 hrs compared to ~50hrs on the unlimited.
The Ed5's might be like the Ed8's which we all know variate in sound, though ultrasone didn't admit to this variation yesterday either.
Anyway, the ED5 unlimited sounded very good actually. I think the slight peak in the highs would settle with burn in and then these would sound great.
BTW, the rest of the show was really good. I was most impressed with the yamaha MT-220 actually, but it's hard wired cable put me off buying it. A straight hard wired cable would have been okay, but it's a weighty 1/4 inch termination with a coiled section at the end. Not really ideal for pocket mp3 players!
The guy at the stall said he'll definitely give my feedback to yamaha so maybe they'll come up with something.
(Oh, and the AK240 was impressive too....future purchase probably.)
Look Line those sales reps have been well trained to speak only the " official company's Version" 😁
Anyway I confirm that the Ed5 limited is a very good headphone ( besides it's crapy MMCX connector that I already had sent for repaire once)