I'm beginning to have issues with review posted earlier about these being absolutely a "basshead" IEM. This label has a negative connotation to it. I think that headfiers are used to either good/great sounding IEM's with limited bass response or bassy sounding IEM's with different levels of achieving a full range sound. But most fail miserably. Not many, if any IEM's got the full range thing to an audiophile level. Heck there are very few full range speakers and almost no 2.1 systems that achieve this feat. And the speakers that have gotten it correct are $18,000 and up. Integrating 100hz and below seamlessly is something that some audio engineers spend a lifetime trying to perfect.
Here is an example of what I'm saying.
No audiophile would consider these basshead speakers: Revel Ultima Salon 2's.
They produce amazing amazing, lush powerful bass. I'm using these because I have auditioned these, but there are many others to choose from.
But, if you got this same sound into an IEM, most Head-Fi'ers would slap a "basshead" label on it regardless of how well they achieved those frequencies. This level of sophistication is foreign to most. They hear and feel 25hz and automatically it is a "basshead IEM. But, in audiophile world they are just know as "full range" speakers.
From what I have read, I'm thinking that the 200's are just that. A true "fullrange" IEM because they got the bass perfect. Instead of distracting from the sound, it compliments the sound. It actually adds to the realism of the mids and highs, like the Salon 2's.
I believe(correct me if I'm wrong), JVC has produced a new level of IEM. Something that can be considered "fullrange" but not "basshead". It would be insulting to slap that label on the Salon 2's and from the descriptions of the 200's sound it isn't an accurate label.
I may be completely wrong. I haven't listened to the 200's yet. I am going off what I have read and I am mainly hoping this is true because I have mine coming in the mail.