Would the Cipher cable work with other similar adapters? There are many other options currently available.

If it's a simple digital gain control, yes, pretty much.

Raising the entire spectrum is simply adding more gain. The ear is thus 'tricked' that the louder setting sounds better.

Nothing wrong with your hearing. By the contrary, your hearing is very good. Weirdest tuning choice IMO, but if you venture and fix it with an eq, they can sound amazing.

If you are a classical musician you will probably prefer a natural tuning, especially for chamber music, where the instruments are exposed and have to sound as close to real life as possible. Layla is not a natural sounding monitor at all; in fact it is very artificial sounding (I come from a...

Easy: run a sine sweep. If at some point the sound suddenly jumps on one side there's something wrong with the corresponding driver from the opposite channel.

My remote/mic died a year ago. It's the weak link on the 3003i system. I'm a bit luckier; I can still use them as regular IEMs, although lately there seems to be a problem with one of the twfk drivers.

  Indeed it is. That's why for me is so frustrating they are so oddly tuned. I hope to live the day I won't need to eq my hps.

Not in public, but, mind you, Layla response is very unpredictable, the eq for one source might be quite different from that of another. I wrote about that earlier on this thread.

It depends on your skills (for properly eqing them, don't ask me why, all headphones need that if you want to do serious audio work on them) and listening abilities (or so to speak, learning them afterwards, especially for judging the mid frequencies information and dynamics).   My eq'd Laylas...

  Now you're talking.   I would first check, however, even the response of UERR with a sweep before taking it as an absolute reference. Your eq settings do roughly adress Layla's problematic areas, but also differ here and there from my own.   Besides that they do prove how far actually...

Didn't notice a difference after almost a year.   John Culter's measurements confirm my findings, the huge dip in the high  mids and the big spike in the treble. Looks like mount Everest. An un-smoothed representation could be come even closer. Very peculiar vision of what 'reference' means...

  Haha! That's epic!   My new Mojo sounds so much better than the Dragonfly, and it's not a matter of preference, it's measurable in any way.

Well, IME the olives sound bassier/fuller than the silicone, and I also found a way to quickly and efficiently insert the IEMs in my ears, without squeezing and then having to wait for the foams to regain their shape. I could be lucky though, my ear canals have pretty much the width of the...

        You can do the same with silicone tips. I had the best results with the included ones and with the Sony hybrids. But I still prefer the sound of the foamies, better isolation, fuller sound.