Disclaimer: Edifier graciously sent me this set of IEMs to review. As they are intended to be used for cellphones, I can be objective, since I don't use my cellphone as a music source these days and I only use a Bluetooth auto link for my phone while driving. As cellphone models are all idiosyncratic, your mileage may vary from anything I state. I also used my "gym-rat" daughter to evaluate the phones while strapped to her iPhone in exercise mode. I burned-in the IEMs for a good day or so, about 25 hours.
I'm not showing a bunch of unpacking photos. There's no need since the P270s come packaged like this:
The packaging clearly shows that they are intended for cellphones, and includes an adapter extension for different brands. If the regular cable doesn't work correctly with your phone, throw on the adapter and try. Both the regular cable and the adapter are terminated in a 3.5mm plug. The regular cable worked with my iPhone 5s just fine. The phones come with the requisite extra sizes of tips, so that you have S,M and L to choose from for an well-sealed fit.
The medium tips fit me well and were pretty comfortable for the three hours I wore them in the initial test. I got a great seal and a LOT of ambient noise went away... enough that I made sure to look both ways at the corner of the city street I was on. My iPhone library of music from 7-9 years ago sounded surprisingly good. Good enough that I exported some songs to my current DAPs later. Playing the same songs on my DAPs later with the P270s was a disappointment. The music was muffled, veiled and muddy as compared to being played on my iPhone. I don't know why. Impedance?
My college senior, gym-rat, that's home for Thanksgiving, wore the P270s with her iPhone while taking her morning 2 mile run. As the recipient of lots of "sport" IEMs over the years, she has definite opinions about her workout IEMs. She currently uses M6 Sport-Fi IEMs, but said that the P270s are more comfortable and seal better. The only negative the "Beats-addled," SkullCandy baby had was that they didn't "thump enough." She did, however, ask if she could take them back to school after Thanksgiving because they "felt good"... Enough said, for me!
As an extension of the phone, the P270s did very well. Audio was clean and crisp and the mic was very good. No one could tell that I was using a set of ear phones with an in-line mic, but one person complained that I needed to "get out of the wind or call them back." All I did was turn around and hold the mic closer to my mouth." It worked.
If my gym-rat wants them because of comfort, and they sound good with an iPhone, there's a market for these inexpensive IEMs. These will be at the University of Georgia after Thanksgiving...
