“ EXECUTIVE SUMMARY 1. Not coherent throughout the audio band: a. Overall neutral, but but but b. What’s up with the peaks in the upper mids/lower treble?* c. Little bit bloated in the bass d. Bass not keeping up with the mids/treble 2. Little bullet design = comfort/fit that blows monkey chucks 3. ...” --purrin
“these are ok, i just bought them. They have the same dynamic musical presence as their on-ear, the Q-460. Construction is all plastic, but the cable seems flimsy. same as the Q-460s. I guess these are the compromises concerning the lower lines of the q-series. ” --hanglee65
“First of all I'd like to say the customs and the cable are both insane, the customs look incredible and the linum cable and connector beat the hell out of any other CIEM I've seen around. Cosmic Ears list this as a jack of all trades monitor which I do agree with. I'm coming from a 4BA model to this 2BA and I've been pleasantly surprised by the sound. I haven't had these a week yet so...” --daftpolecat
“First of all I'd like to say the customs and the cable are both insane, the customs look incredible and the linum cable and connector beat the hell out of any other CIEM I've seen around. Cosmic Ears list this as a jack of all trades monitor which I do agree with. I'm coming for a 4BA model to this 2BA and I've been pleasantly surprised by the sound. I haven't had these a week yet so...” --daftpolecat
“Copied from: http://www.head-fi.org/t/686039/cosmic-ears-ba4f-review I'm finding it hard to rate these, for the price I would give them 5 stars on every department. But I'd rather rate them, referenced with the idea of what the very best cIEM could be. The BA4f with the Ice Blue color Short History Before I started my journey into the cIEM...” --Marleybob217
“ i cannot give you a price comparison or compare it to others in its price range as i was given these as a gift. but i loved these things. the bass was impressive, good highs, and smooth mids. although they tend to be a little unclear sometimes i find them to sound very enjoyable and stunning. they didn't distort or clip at all and i noticed no sibilance at all. the only thing i can complain...” --bcasey25raptor
“After starting to review a few IEM's in the past week I decided to slip these babies back into my ears as a reference point for the other IEM's. After doing so for a few minutes I realized these really needed a proper review as they definitely keep up with a lot of gear that is more expensive. As can be seen by the picture these are very tiny being the smallest IEM I have owned to...” --dweaver
“The HY3 is a three-way, three-driver hybrid custom in-ear monitor from Sweden-based Cosmic Ears. It utilizes a dynamic driver for the bass and twin balanced armature drivers for the midrange and treble, which used to be a very rare configuration, although hybrids have increased in popularity over the past year. The bass unit looks to be around 8mm in diameter and has its own sound bore. The two...” --blueangel2323
K3003 earphones provide you with one-of-a-kind personal sound-tuning capabilities. By changing the sound-tuning filters, you can adjust for three precise sound-output preferences directly into your ear. These adjustable, precision-machined mechanical filters allow for bass, mid or high frequencies to be modulated. The K3003 earphones set a new benchmark in audio quality. By pioneering the...
AKG K391 NC in-ear headphones turn a noisy space into a private concert or screening. Compact and easy to travel with, these noise-cancelling, in-ear headphones will make anything from a crowded airplane to a subway seem downright peaceful while delivering powerful, detailed sound directly to your ears. We've included a premium carrying bag, and an in-line microphone allows you to answer...