I'm in a total disbelief reading iDX 160 iE reviews here, and how low some of the people are rating them while an identical DX160 iE (minus in-line remote) impressions have over 35 5-/4-star reviews. Some of the comments here are very misleading. First of all, iDX 160 iE comes with 2 (two!!!) sets of extension cable with a slightly different wiring. Why? Because Beyer wants to be sure their headphones are compatible with either Android or iDevice phones. The TRRS connector termination wiring between these phones will vary, and Beyerdynamic (I haven't seen any other company do that) provides 2 extension cables where you can distinguish one with white plastic rings at the connector and the other one with black plastic rings. I tried it on my Galaxy Note 4 - one cable worked, and the other didn't. When it doesn't work, you will hear a hollow "cave" reverb effect which goes away when you press the Play button. If that happens - switch to another extension cable and the problem will go away. If you iDX 160 iE came with only one cable - you either got a Chinese fake pair of headphones (already seen those floating around) or you got an open box package with missing accessories.Also, I have been using DX 160 iE and iDX 160iE - and never had a problem with a cable. The cable is noodle flat, so try to wrap it around your 3-fingers for storage in the case, don't fold it like a piece of "paper" because it will add some extra wear'n'tear to it. Also, keep in mind - Beyer offers a decent manufacturing warranty. So if you have a problem and outside of Amazon return policy, contact Beyer directly - their communication is pretty good.Regarding iDX 160 iE itself, I will post my original DX160 iE review with iDX updates because these are identical warm detailed analog tonality dynamic IEMs with the same build and design. The difference is in-line remote which WORKS with Android, but only Play/Pause button with a single click to Play/Pause/Call and double click to skip to the next song. And of course to pickup and carry phone conversation from your smartphone or your laptop (Skype type of adapter for Mic/headphone laptop ports is included). Volume buttons only work on iPhone.===================================================Arrived in a similar packaging box as DX160iE model, you can read their box like a book to get a lot of info before you even get to the headphones itself. You get everything from hi-def pictures, to a relatively accurate description of the sound and the design, and detailed technical info and list of accessories. Furthermore, front magnetic cover flips open to reveal a display of the actual headphone set. One thing I do want to mention, something that I noticed in original model as well, on the cover it says "flat, detachable cable". In reality, it's "detachable extension cable" since the cables itself are permanently attached to earpieces and not replaceable, while the extension cable is. Inside, you will find a very impressive collection of accessories. First of all, you get 7 (!!!) pairs of silicone eartips in different sizes and single, double, and even triple flange design. There is also a pair of premium T400 Comply Foam eartips. Also, you get a shirt clip, a very unique adapter to attach another pair of headphones to share the music source, two detachable extension cables (more about this later), VoIP adapter cable that connects to your laptop headphone and mic ports and joints into 3.5mm female connector to attach iDX headset, and a premium hard carry case. A very detailed user manual is included as well.Out of the box, the headphones have a lightweight design of all aluminum housing with a detailed anodized finish and textured aluminum ring design, and a metal mesh covering the nozzle. There is a pinhole port opening next to molded strain relief which typically assist with sound tuning, especially when it comes to bass control. Though L/R identification on strain relief is not easy to see, a noticeable bump on the R side guides you to id it even in a dark. Just like in their DX 160ie model, iDX also has a flat tangle free cable which gives it a more modern design look. The cable attached to headphones is very short, approximately 0.3m, and both of the flat cable sides come together in 3.5mm connector which serves as a y-splitter. The idea behind this design was to use it with your phone in a shirt pocket and a short headphone cable attached to it. But for most of us, the extension cable going to be a permanent fixture. Btw, the splitter adapter goes perfectly between original cable and extension so you can share your music source with another pair of headphones attached to it.Two identical extension cables were included, and at first I was a bit confused, though I did notice their 270deg angled 3.5mm gold plated connector had different color plastic separation rings between TRRS elements of the plug. I had to turn to instruction manual to learn that each cable has a slightly different wiring to make it compatible with different smartphones. Now, that is truly brilliant! In my recent reviews we had a few discussions with people complaining that in some cases headphones with in-line remote used with Moto and Sony doesn't behave the same as with Samsung/HTC/LG smartphones, and vise versa. With so many different hardware versions of Android compatible headphones, some headphone manufacturers notice that difference and make bulky headphone connectors with a switch, while Beyer had a more logical solution with 2 different replacement extension cables! Next, when it comes to in-line remote, volume up/down is for iDevices only, while multifunction button has a single click for Play/Pause/Call, a double click to skip next, and a long press to activate Google NOW or SIRI. The quality of in-line remote was really good, buttons had nice tactile response and easy to locate without looking at remote. Mic sensitivity was good and I had no complains from talking to people on the other side of the line.Now, about the sound quality. Despite using in-line remote control, I can confirm that sound quality between DX 160 iE and iDX 160 iE models is identical. You get the same balanced warm sound with a deep low end extension with enhanced bass quantity, and a bit of v-shaped curve response. Low end has a powerful slam with a deep sub-bass rumble and a fast mid-bass punch. Bass does spills a little bit into lower mids, but upper mids are crystal clear and very detailed, especially when it comes to vocals. I did feel mids very a bit recessed, thus giving it a slight v-shape signature. Treble is clear and well extended without being hot or peaky. There is no hint of sibilance, and overall sound is great for extended non-fatigue sound listening. Soundstage is average in width/depth, and it's more intimate in space. There is a little bit of cable noise, typical with flat cables, but shirt clip could take care of that so the cable doesn't move as much. Isolation was really good, even as a passive noise isolation ear-plug which attenuates background noise. You are still ware of surrounding, but with a right size of eartips or with ultimate Comply foam solution - you can really cut down on background noise.Overall, I think these are great in-ear headphones, now enhanced even further with in-line remote control to integrate with your smartphone. With it's commercial tuning of balanced warm sound and enhanced bass, you can even consider these as "modern audiophile" quality IEMs.