Excerpt: I have worn these: - on stage to monitor playing my own instrument = Awesome - in coffee shops to focus on completing work projects while completely blocking out people talking in distracting shrill and loud voices = Success - to monitor video camera audio feed = Not So Good These earbud headphones...
Pros: Comfortable, Compact, Durable, Good Bass, Great Sound, Lightweight, Stylish
Excerpt: I'm an acoustics professional with a pro audio background, and after much research and comparative listening, the ER-4's are the clear winner on the IEM market. The frequency balance is as close to flat as I've found in an IEM and compares favorably to my reference headphones and loudspeakers...
Pros: Accurate, Flat Response, Good Bass, Good Value, Great Sound
Excerpt: I purchased the Etymotic Research ER-4PT because I was going on a plane trip and I wanted the maximum passive noise isolation and the clearest sound reproduction possible. These ER-4PT headphones did not disappoint.
Pros: Durable, Good Value, Great Sound, Lightweight, Optional Custom Ear Tips, Stylish
Excerpt: I lost my prized HF5's and decided to make the leap to the ER-4pt's. I am pleased with my choice. These have a more robust construction than the HR5s, which felt dainty in comparison. The sound is a little more accurate and immersive than the HR5's.
Summary: Fantastic clarity and well worth the price. I have £500 + in ear phones and these are still my goto. If you want to listen to music how it was recorded buy these. Fantastic sound and a really long lead.
Summary: These are undoubtedly my favourite IEMm of all time. And I think that's saying a lot, because I also own Shure SE535, Sennheiser IE8, and Westone UM3X. ER4-PT simply produces the most clean and accurate sound I've ever heard with an awesome soundstage rarely seen in IEMs.