I can say that I too had a very pessimistic and already looked at the JH3a in a pretty negative way even when I received my unit. What people come to hype and expect never ever materializes, so I kind of had a period of saying to myself 'why did I wait so long for this?"
Anyways, long story short, after being able to get a proper fit and getting my system set up right, it took me a good 30 minutes of listening to get my nerves calmed down regarding this product and the crazy story behind it. Once I really got into the music and was actually to the point of listening for enjoyment and not for seeking flaws, I noticed how incredibly engaging of a setup this really is. The fact that all I had was a USB connection to a laptop instead of my massive rack of really expensive (and heavy) equipment to listen to music really blew my mind!
Because there was so little to fiddle with and worry about in this setup, I managed to get entranced into the music, song after song. When I finally took the iems out of my ears, I realized that 5 hours had passed in a blink of an eye and that I hadn't enjoyed listening to my catalogue of music this much in many years. Having these in your ears really lets you be in your very own world and not worry about disturbing your wife or your nextdoor neightboor.
Sure, there's a tiny bit of hiss when no music is playing, but my $5 WA5 + HD800 combo had way more background noise that this and was nowhere near as enjoyable of a system to listen to than this is right now. The moment you get into the music, all of my frustration melted away and I got to listen to a product that just about delivers what was promised. Sure, it doesn't have 24/192, but then again there is pretty much zero worthwile content in that format...let alone people actually being able to notice the different with it. Even playing everything in redbook format, I was not really dying to hear higher rez material. Granted, I will eventually get a usb-spidf connection to see the difference, but I don't feel I'm missing much.
Alright, so you're probably asking yourself what the hell these actually sound like after all my yapping this whole time. Well, I first of all wouldn't call this a very neutral system, even with the bass turned down. The bass knob is really about extension of the lower octaves and empasizing them when required. The knob never makes the system sound lean because the mids are always very present and have a pretty warm tone to them. The treble is really excellent for an iem and while not as pronounced as something like the HD800, i feel that they extend more than the LCD-2 headphones. The highs never really call themselves out, but when they are meant to be in the mix, you realize how extended the JH3a system can be. This is very evident when listening to bluegrass music, which is very fast and really neads to nail the highs in order to sound anygood...both of which the JH3a excel at!!
Soundstage is very much in your head and not airy like the HD800, but once you get accustomed to the sound, the imaging is extremely good with amazing seperation of vocals/instruments. I believe this can all be attributed to the amazing design that is the JH16. By effectively having 3 sound bores for bass/mid/hi along with active crossovers, no part of the spectrum ever gets drowned out by the other. This allows both instruments and vocals to be upfront and present without ever smearing into one another or have one feel recessed. You can really see that when Jerry released the JH16s a year ago, he had other plans for them...since they really feel designed to be run in this configuration.
Finally, and most importantly for me is the tonality of a setup, which usually kills most headphones for me. I have a pair of Zu Soul Superfly speakers and Atma Sphere M60 amps which I believe nail most music with rythm and tone. The JH3a also nails it on tonality and punch, which is no surprise considering Jerry Harvey's background and music tastes. I do feel that if someone likes the tonality of the LCD-2, they would feel right at home with the JH3a.
All in all, this system is highly enjoyable. There are obviously a few little things here and there of annoyance (which have been discussed in great length on this forum), but the pros so heavily outweight the cons that I think we have a definite winner in our hands. After all these years of looking buying sealed headphones and being unhappy with their performance, I have finally found the ideal bedside rig that will keep me up late a night listening to my very extensive catalogue of music! Plus, who would have thought that my most enjoyable music setup could have been the smallest, cheapest, and most convenient on to listen to!