Hey Everyone.
I've had my JH-13's for about a week now, but I've been unable to take them away from my ears to get photos. I'm planning on writing a full comparison in the future (JH-13's / ACS T1 / SE530 / ER4P->S / E4c / HF2) but I'll lay down a few things I've found. Keep in mind, all of these statements are based upon personal impressions, by no mean is this meant to be the law of the land.
Comfort: My main concern was how the acrylic would feel on my ears. Upon placing the headphones in my ear canals, I felt the presence, but it's not uncomfortable (double negative intended), nor intrusive. I've worn them for periods exceeding six hours with no discomfort, pain, or annoyance.
Cleanliness: The audio is extremely clean, and what appears to be flat. I'm able to hear articulation of each component in the mix, none of which appear to be favored unless the track has been laid out that way.
Bass: I was also concerned about bass. As I'm in love with the low frequencies, it was a hesitation due to the 2x2x2 configuration compared to the 1x1x2 config found in other pairs. Wow, I was pleasantly surprised. The bass is DEEP, articulate, and fast. In comparison, it feels like you have have a 12" sealed subwoofer inside your head. Now, the IEM's have the ability to produce level, of any frequency, you like, but I feel it'll depend on your source. If you're a true bass head, the unaltered sound from an iPod or iPhone will absolutely be sufficient. But, to get the true low end emphasis desired, a parametric EQ or external amp may be needed to solve any further low end envy.
Scalability: As I progressed from my iPod 5.5 Gen -> iPhone 3Gs -> MacBook Pro 13", I felt the quality of audio produced better and better. From reading, it seems that the headphones will only improve with better DAC's and amplification, so be prepared to sink more money in to a better signal chain
Isolation: With my current fit, the IEM's don't isolate very well. I'd love them to knock out more external sound, but take this with a grain of salt as I use them in Chicago. When I'm at home listening, I'm able to listen to audio on some of the lowest levels my sources can output, still retaining clarity. I'm planning on sending them back to JHAudio to resolve this, as my needs might be more extreme then others.
Fun: These IEM's are truly a joy to listen to. Anything I throw at them, it's like I'm listening to the recording for the first time. They have allowed me to admire the mixing quality, dynamic range, and placement of all of the sounds. Such a joy, in fact, that I haven't been able to leave my bed for the last week
Conclusion: These headphones produce the best sound I've ever heard. What's scary, is I know I'm not even pushing them to their upper limit. The audio bliss presented is something to die for. I wouldn't hesitate to spend the money on them again due to the sheer amazement it brings from your music. Thanks for reading, and I appreciate any / all feedback. Now for the pics!
