wow, im actually really surprised that there arent more impressions of these on here, they easily had consistently the longest line of any product at canjam. And i think its not too far of a stretch for me to say that ive heard them more than almost anyone but jerry himself. I listened to them over 4 times while i was at canjam, and the 4th time was for close to 10 minutes.
A little bit of a preamble here first. I went into canjam hoping to find a dsektop amp for my jh-13's, choosing from between the Sonnett and the phoenix. And i also really wanted to find a fullsize can that i liked as much as my 13's. The first thing i listened to on saturday morning was the new LCD-2 from Audeze. And i want to say, this headphone is amazing, it matched the 13's at pretty much everything, and the soundstage was larger. I was floored, and super excited all at the same time. I knew that in a couple months i would be buying them. I heard them out of the new Cavalli liquid fire amp, which is a hybrid design. I was the first one in the room and no one else was there to listen so i got a good 25 minutes with them. I left grinning from ear to ear knowing i had found some fullsizers to use that i didnt feel was a compromise.
unfortunately this feeling did not last very long. my next stop was the JH room upstairs. I patiently got in the line to hear the new 3a. Jerry is an amazingly nice person to talk to. Very humble. Each time a new person got to the front of the line he would tell them all about the amp, how the new crossover worked, and how the the amps worked. then he would place the monitors in their ears for them. In no time i was at the front of the line getting my introduction to the 3a from jerry. The amp is considerably larger than my protector, but not overly large, perfectly fine for taking to work, or the bus or plane. Though definitely too large to use like while running for instance. Its got the circular 8 pin connector on the front. Along with a trrs connector for the analog in and the coax spdif input on the extra pin. Also there are the rocker switches that are used for controlling the volume and the bass amplifier level. As has already been stated the bass adjustment isnt a traditional bass boost, it directly controls the output of the two bass amplifiers and works incredibly well. Also the volume control is done entirely in the digital domain, but since the dac is 32 bits, they are truncating down to 24ish with the volume control so there is not audible loss in quality. The setup that they were using was an analog line out out of an ipad into the analog line in on the front of the amp. They had a decent assortment of music loaded into the ipad.
Now onto actual listening impressions, the only album loaded on the ipad that i actually knew was Lateralus by Tool, which is an amazingly well recorded/mastered album, that i have listened to quite a bunch, even within the last month or so. Since i have the 13's, i asked jerry what level of bass would be approximately the same as my 13's and he said -10dB on the slider on the computer, so i set that and off i went. I played the song the Grudge which is the first song on the cd, and as soon as i started i knew that what i was hearing was better than the lcd-2's that i had just finished hearing not more than 5-10 minutes earlier. The soundstage on the 3a's is unbelievably large, it was larger than the lcd-2 by a fair margin. but SS isnt the only area where these beat out the 13's and the lcd-2's. The entire frequency spectrum is so much more coherent than i have ever heard before. its ability to image and localize the information on a record is astounding. the highs are even more sparkly than i have heard with my 13's, the mids smoother,and the lows even more impactful.
on my many consequent listens i took my own iPod with me so that i would have more music that i am used to. I listened to everything from tool to lady gaga to lamb of god to black dahlia murder, to brand new and lastly i listened to Origin. everytime i went back i found something new to love about the sound. When i listened to the black dahlia murder's song Deathmask Divine, i realized that these headphones were presenting to me more details in the music that i had ever heard before, and it was just a high end boost like many say certain headphones to. there was more detail across the entire musical spectrum with this track than i had ever heard before. For the first time i noticed that on the song, the singer is standing at different distances from the microphone depending on whether he is doing the deep death metal vocals or the high pitched screaming vocals. With Brand New i had a new appreciation for the the quality of the males vocals that could be produced, better than anything i had heard before. with lady gaga, which i use to test bass, it went just as deep if not marginally deeper than even my 13's with the protector which goes deeper than anything else ive heard. And now onto my last musical impressions. On my last listen with the 3a, i decided to run my final torture test, which is to play the song Aftermath by Origin off of their album Antithesis. This is the single most complicated album that i own. There is more sonic information being presented by this cd than any other i have ever heard. Origin is Technical Death Metal to the extreme, and surprisingly well recorded with extremely minimal clipping even though it is completely brickwalled. The thing about the cd is that it brings almost every headphone except the very best to their knees, its turns into a garbled mess of noises, that are hard to pick out instruments let alone localize them in any sort of soundstage. When i got my 13's i was thrilled that it gave the record a bit of depth and aloud me to hear all the instruments on their own, though still not do to great of a job localize a position for them. This whole idea that the record was a lost cause went right out the window with the 3a's. Its like the 3a's diced up the music with a knife and layed it out in front of me to pick apart as i pleased. till now the singer always sounded like he was being hidden by the rest of the music. with 3a's he had his own space in what could only be a a SS to my surprisement. each instrument had a location as they were on a stage in front of me, all the instruments even had air around them and were individuals rather than one big wall of sound. There is a reason why i put more words out there about origin than any of the other music i listened to, and that is because it had the biggest effect on me, except for maybe when i first started that tool cd. I had frankly never imagined that origin ever would, or could sound that amazing, it blew me away.
i can answer any other technical questions you guys might have, though most have been answered already in the thread. I spoke with matt, the guy that designed the whole amp thing. The amp does not use a separate dac. The dac is included as part of the DSP that is used, and its a cirrus chip. They are only using roughly 5% of the processing power of the DSP in the active crossover. all 6 channels of amplification can provide up to 100mA's of current simultaneously which is way more than you will ever need, the amount of power in reserve is amazing. I didnt actually ask about this, but since matt also designed the Rx for ALO, im assuming that the amps in the 3a are very similar to just having 3 Rx's in the box.
Any shortfalls that i was worried about going in (the quality of the dac/amps, digital volume control) were instantly dismissed once i heard the unit. This is the best audio that i have ever heard.
I have owned the jh-13's since the end of december, i do almost all my listening with a Audio GD dac 19 plugged into my RSA protector, so i think that my source and amps are of pretty high quality. The 3a beats them at everything. Even the neko audio rig at canjam, using neko audio's dac and the sonnett, which i loved with the 13's( it is completely hiss free even at max volume with the 13's) and liked more than my protector + dac19 rig, couldnt compete. The 3a is the real deal. it is the best audio that i have ever heard.
I know several in this thread have stated that it is more likely a evolution in iem tech than a revolution. I whole heartedly disagree with this statement. the 3a is a easily a revolution in the IEM market, nay the headphone market, nothing that i have heard in the past or that i heard at canjam even came close, it appears that Slim.A has always been right saying that phase/time is the most important part of the music, and the 3a proves that.
I know the whole impression seems a little fanboyish, and thats why i opened with the bit about the lcd-2, i was not expecting the 3a to be this good, i was not expecting to be blown away twice in the first 15 minutes of canjam, with the second anihilating the first.
I also understand that this is the first generation of this tech, and that most likely a more refined version will come in a year or so (purely speculation on my part here) but i feel this first generation will get us 95% of what a more refined version will do, and honestly i cant live without the 3a, its not that my 13's paired with my protector are inadequet now, just that all i can think about is how much better the 3a's truely are.
and to put my money where my mouth is, i got my free impressions for my pair at canjam, i cant wait till this fall when they start shipping.
EDIT: i see alot of people asking whether people are ordering with the JH-13's or the 16's. my view on this, is that since the bass is completely adjustable, you can easily give the 16 version the same bass as the normal 13's have, but can then also turn it up to the 16's level if you want, and even at the 13's output level, your still getting that little bit of extra bass refinement that the 16's have.
So i guess to put it blunty, unless you're really pinching pennies for those 50 extra dollars, there would be zero reason not to get the 16's version.