Conclusion: The new SHURE E4 earphones fill the performance/price gap between the E5 and E3 earphones already offered in the E Series lineup by providing excellent audio performance along with the ability to seal out unwanted background noise.
Summary: I like this phone so much I am onto my second pair. Are they perfect? No. Are they the best IEM for the price? Unless you get them at $79 like I did the second time, no. Do they have a good soundstage? Not really. Are they durable? Like a boat made of paper.
But...Do they isolate well?
Pros: good isolation, warm, friendly mids, bargains can be had
Cons: Shure cables. God I hate you Shure for your cables.
Summary: I had my E-4c since late 2005 when there its was THE earphones back then. Over the years they held up abuse fine except the cable relief cracked from dry roting but music still flows just fine.
Summary: These little guys sound amazing for the money - does require about 24hrs of burn-in before things loosen up and sound right. Even, full bass due to the added port over the E3's. This was my second pair after the cable separated from bud after about 1-year's regular usage.
Pros: Price / Performance, Sonic Fidelity, Comfort
Summary: These are my go-to headphones when I don't want to use my customs. They are easy to wear, sport all-day comfort, provide reasonable isolation-- to excellent if you buy the foam inserts, and are a full-range in-ear monitor lacking very little, and a steal for the price. I own 3 pairs.
Summary: excellent treble and midrange, treble very detailed, the bass is a bit small but very responsive to EQ to increase the bass, the media are also very good, maybe in my life now is not heard many headphones but they are the best I've heard
Summary: Had these things for a while now, and still use them with almost anything that has a headphone jack attached to it. My phone, my old iPod, my iPad, my pc, my laptop, and they always find a way to sound really wonderful.
I'm not gonna lie and say I'm some headphone guru. I'm not.
Pros: Very detailed yet relaxed presentation with sub par inputs (like my phone or MacBook Pro)
Cons: For what they are, haven't really found any.
Excerpt: The Shure E4c headset is an upgraded version of the popular E3c, with better bass response and more sensitivity. It also comes with a fit kit that includes a variety of eartips, plus a pair of replaceable eartip tubes.