I have both the Heaven V and the JVC's, haven't listened to the Heavens for a while (not because I don't like them, just too much new stuff, too fast, too much office work, etc). When I get a chance, (hopefully next day or 2) could pull them out and compare if you'd like
That would be wonderful!
For me as college student spending so much money on a single IEM is huge investment and any help is greatly appreciated!
OK, quickie comparison, came home late tonight from work, didn't feel like doing anything but listening to headphones, figured I'd do the comparison. Pulled out the DX90, Line out to ALO National, listened to Alex McMurray "That Train" and "Mr Weitz" from "How to Be A Cannonball", Elton John's "Funeral for a Friend/Love Lies Bleeding" from "Goodbye Yellow Brick Road", Mozart'sViolin Concerto, Marianne Thorsen/Trondheim from a HDTracks Sampler, All Time Low "Somewhere in Neverland" from "Don't Panic", The Band "The River Hymn" from "Cahoots", Mavis Staples, "Can You Get to That", from "One True Vine", Sonny Rollins "St. Thomas" from "Saxaphone Collossus", and some other assorted tunes, all uncompressed, some Hi Rez (I know, I suffered to do this, but I'm just that kind of guy).
First order of business...Whichever pair I had in at any time was great...wasn't a moment I didn't enjoy the listening, and don't think you can go wrong with either. They don't sound AT ALL alike, though, quite different beasts. I'll start with bass. The JVC has more, period. If that is your main criteria, no contest. It's more in volume, more intense/present, tends to drive the music with a real intensity. FAD's bass isn't missing, it's tight, controlled, has bounce, but there's less of it (not a bad amount for a single BA design, though). Mids-FAD takes it here, these are definitely mid-centric, or even balanced across the frequencies. Vocals are more up front...the JVC's are a bit V in frequency response. Words easier to understand on the FAD. They both do great highs, JVC has bit more energy here, but not to the point of bothering me (but I'm older than many of you, may not be as sensitive to highs, though I do notice when they are tizzy). Both give you good color of cymbals, maybe a bit more differentiation on the FAD, but it's really close. Where I find the biggest differences are in overall presentation. The FAD's have a wide open soundstage, great detail, great rendition of the space between instruments, and, as they say on the FAD thread, manage to keep everything in an organic whole, with details being there, but separated cleanly, in a clean, real sounding presentation. The JVC's, while they do the soundstage thing well, fairly wide, doesn't go out as much, by comparison things sound a bit congealed. On the other hand, if the FAD is a clean picture on the recording, the JVC is a technicolor rendering. Everything is rich, tone color saturated, like a photo that slightly overemphasizes some colors, to gorgeous effect. Still, details/space/harmonies are not as cleanly delineated on the JVC as the FAD.
So, reading the above, you'd guess I'd give the nod to the Heaven V, and you'd be right, but I like them both so much glad I have them both. Sometimes nothing does it like a driving bass, y'know. (while I'm typing, listening th hi-rez "Truckin" by the Dead, same conclusion).
Didn't comment on fit...both not the easiest in my ears. FAD is a tube/bullet design, which I usually do well with, but find myself having to fidget with it a lot to keep that seal, which, when you lose it, you really lose the bass. The JVC has one of these chambers that sticks out, which I usually do very bad with-I'm generally a tough fit-but, for this style, surprisingly OK seal, still have to fidget some, oh well.)
(I know I'm going to get flac for this from the JVC crowd, which I actually consider myself one of...you can send any jazz FLAC, hi rez, will do, send it to me any time...)