Excerpt: I use these for music listening and for field monitoring.I bought them, in part, based on the Shure reputation for design, ruggedness, and accuracy.When I first received and tried these I did not like them. They fit poorly and the sound was very thin and lacking in bass and definition. I put them down after 5 minutes and considered returning them.But, as in most things patience (and reading the instructions) are indeed a virtue.
Pros: Accurate Open Sound, Durable, Fits Well, High Ambient Isolation, Replaceable Cable
Summary: Excellent IEMs for detail, clarity, and flat response across the whole sound spectrum. Love them, especially with the stock yellow foams. For a factual reprsentation of your music, really,really good. Not recommended for low bit files. For "fun" listening, it lacks a bit of bass.
I use an AK100. AK100 comes with a very slight v-shaped EQ. When making the V-shape more pronounced I could get more bass from these things, at the expense of some detail.
Pros: Detailed sound. Lovely mids. Wide assortment of tips that isolate well.
Summary: Coming from headphones such as the sennheiser HD25-1 ii and HD650 I was expecting much better SQ from these in ears.
They sound cold, really cold. It sounds as if you're listening to music through a tin can.
They are detailed however, but it makes everything sound cheap.
I haven't listened to these for long, just a day. But I'm pretty sure I will never get used to the sound signature, nor do I want to.
Summary: I've used these in-ears for about a year and a half both listening to recorded music and for live in-ear monitoring for singing, acoustic, electric guitar and drums. I've found them brilliant for singing, giving me great clarity for pitching vocals more accurately but have also found myself wanting a little more presence in the low-mids and bass frequencies when playing only electric guitar or drums.
Summary: I currently use my Shure SC-4 and needed a spare earphone set so I got these when I got the chance.
I have a bag of the large black olive ear sleeves so it fits nicely.
Sound isolation is very good once you get the proper fit with the sleeves and lower the volume on your device that you use the earphones with. I use it with my iPhone 4 and laptop and the music was pretty good.
Summary: These headphones are great. They fit snuggly and block out a good amount of ambient noise and the sound they produce is amazingly good for headphones. The design of the buds is the best I've ever seen in that they don't protrude from your ears so they don't get knocked out like most do. Also, these are componentized. Each bud is separate from the cable and all can be replaced without having to buy a whole new set if something should break.