Pros: Superb clarity and details.
This is an initial impression of the JH16s right as I got them out of the box.
I gave these monitors a 3-star value because these things really are expensive. I wouldn't call this the "perfect" monitor with the "perfect" sound you're looking for. But these do sound very very good. Nothing comes close to the quality you see and hear on these monitors.
If you have the budget, then go get it. If not, there are so many IEMs out there that will give you an amazing experience.
I haven't scrutinized the sound quality coming out of the 16s. But I must say this. Garbage in = Garbage out.
Feed the Jh16s with FLACs, 320kbps MP3s and you'll hear heavenly music.
Put on a 128kbps sample and watch your world fall apart.
Aside from that, all I can say is that these monitors give off amazing clarity and details.
As a singer and performer, I would want nothing less than accurate sounds off my band members and accompanying music. These things definitely deliver.
Nothing beats custom artwork.
The things you put on the monitors are yours and yours alone.
The designs on my unit are close to my heart.
JH Audio definitely delivered on this aspect.
There is the initial "learning curve" on how to put these custom earpieces in properly. (It took me about 10 minutes trying to fit the right earpiece in my ear).
Once they're locked in place, they're locked. The earpieces won't fall or let loose as long as you send in quality ear impressions.
Once you put them on, they'll block out noise more than any IEM i've tried. You won't feel deaf, but it surely blocks out all unecessary sound so that you can enjoy your music at lower levels of volume.
A great buy if you have the budget. You won't be dissapointed in the JH16s, but again, there are great IEMs out there that can give you the bang for your buck.
If you desire clarity, details, and studio-like sound reproduction, go for these monitors. Just remember, garbage in = garbage out.