Yes, many!
There is a whole cottage industry around cables and adapters. In fact, this comes with a short adapter cable from XLR4 to 1/8" (3.5mm), so could plug it straight into something like an apple dongle... However, I don't really feel the stock cable (DUMMER is actually DCA's upgrade cable!) is an "on the go" cable, because it's long at 6'5" (2m), and the XLR4 end is a bit bulky. Take a second look at the picture of someone wearing the Ether CX too; it's a fairly large (but imo good looking) headphone. The ÆON is the smaller, more portable Dan Clark Audio headphone, also for me the teardrop shape allows it to fit better around my neck when I need to inevitably take the headphone off for a moment. But if you want to use the higher-end ETHER Cx, portably, you may want to consider a shorter 1.3m cable that connects to your portable device.
Get angled earpads. At first they were crushing down on my ears beacus the cups were not deep enough at the back so I whent to Mrspeakers website and got angeld pads from the ether flow.
From everything I have researched and have been told. Yes they are some of the most neutral you can get, to the best of my understanding.
That being said I am running my set with the THX 887 amp from Monolith/Monoprice on the SMSL M300 Mk2 DAC. The extra umph from the balanced out on the amp balanced signal in from the dac seems to help a bit. If utterly neutral is yer goal, as far as I personally know these are the cans you should get.
And now that I notice that this is quite an old question, if you have yet to purchase them yourself and are still yet on the fence. Get them while they are on sale for 750usd, as of March 6th, 2020.