I was at the 1964 booth for a while, so anyone who was behind me, I apologize. One of the main reasons I went to this meet was to buy my first CIEM, so I had to try everything and be sure!
xtoria, sadly I didn't. They only had the V6 available from the old lineup. They had the new lineup there yesterday to demo to everyone. I believe they had the A4, A6, A10, and A12. I tried everything they had I think! Might have missed one, but it was interesting listening to them all. I'll talk about them a little bit below. I don't often describe sounds as much as the rest of you guys do, or use IEM's often, so excuse my dry-descriptions.
V6: Sounded a bit sterile. I can't describe the sound too well because I took them off shortly. The A6 sounded miles better so I didn't feel it was worth listening any longer. I did notice immediately how the soundstage felt very small compared to the A6. I heard the A6 first so it was like going from a large room to just my head when I put the V6 on.
Before jumping into the Adel versions, I have to say the new technology they are using to decrease the amount of pressure is wonderful. Even with bleh earbuds I eventually have to take them out after an hour to let my ears "cool off" so to speak from fatigue. The Adel series seemed to take the pressure factor, and kick 3/4 of it away. You might be wondering how they can still be bassy, but they are, and they are very very well. The bass seems to be way more expansive due to this; It feels room-sized! It did give an impression that the bass was a little bit bloated on the A4, and the bass a bit too weak on the A6 and up, but not enough to make me not love them. These IEM's were the closest thing I've ever heard to a full-size headphone. Yes, even soundstage. When there's no pressure smashing your eardrum, it's easier to relax and hear the sounds from beyond your head.
A4: These were the ones I bought, I loved them! I came with enough money to buy the A10's, but the A4's downright impressed me. Highs that weren't sharp for my sensitive ears. The upper mids felt a little recessed, lower mids a bit better. Bass isn't very punchy, but extends very very low like the Westone 4R I was craving. The bass in the Adel series seems to be very smooth, and not so rumbly. I thought I'd prefer the rumbly, but low-pressure bass is just awesome to hear, it's worth the trade. The A4 had this strange quality to me, and I'm thinking it might be the seal. I found that the bass in some songs could be too intense, while in others not enough, or just right. It felt opposite of how I would have expected it. For instance in an orchestrated song the bass felt intensely bloated, yet in Daft Punk's Get Lucky, it sounded just right. Then in some current pop song it felt like there wasn't much of it at all where there needs to be. I get the feeling it was just the seal though.
A6: Felt very similar to the A4, except there was a bit less bass, and the upper mids and treble were more detailed and extended. I was tempted to get these, but I figured the treble would be a bit too much for my ears after a long session. I would say for most people, this could be the best all-rounder in terms of price and FR.
A10: Didn't last a minute in my ears. Way too treble happy. I can't give a good opinion on these.
A12: The greatest sounding of them all, but with an issue to me. Perhaps it was just the demo unit, or the nature of having 12 drivers per ear, but they felt a little bit out of sync. It was really distracting for me. I don't try enough IEM's out to know exactly what I'm talking about, so if it's something else I'm meaning to say, sorry about that. Sync aside, they were incredibly smooth, and put a smile on my face. These were definitely the best for me in terms of smoothness. They felt very neutral to my ears. Not that I'm a good judge of neutral, but that's just my interpretation. I'm extremely sensitive to treble (my virgin ears haven't been ruined by all of you yet!) so the A12 being smooth everywhere, including the treble made it seriously enjoyable.
I can definitely see myself buying another 1964 ears Adel in the future. They are just that good.
I liked the white CIEM with red ADEL writing on the 1964 poster behind the booth. Inspired me to design mine like this: