AD2K/AD2KX Updated & Final Impressions
Following on from my previous post: http://www.head-fi.org/t/631998/audio-technica-updates-their-open-headphones-ad-series-ad2000x-ad1000x-ad900x-ad700x-and-ad500x/1215#post_9538778
The current (and final) running score is now AD2KX: 0, AD2K: 2.
I knew this was going to be a tough comparison between the original and the "X" going in. I've owned the original since 2006 and actually just came up on 7 years of owning it last month. Before I proceed, I should probably link my AD2K re-review for those who haven't read it: http://www.head-fi.org/t/574882/5-year-re-review-audio-technica-ath-ad2000
I'll also re-state it for the new readers here: the original has been my #1 favorite headphone of all time ever since then,
and it still is. Why do I love the original so much? Because it's way too much fun! There's literally never a time when it doesn't make me either head-bang or dance in my chair. It's the most ridiculously sonically over-the-top headphone I've heard. A lot of people would call it sonically over-colored. I call it supremely satisfying. Forget the technical buzzwords. The AD2K is simply the most directly-involving headphone I've ever heard because it literally assaults the music and sends that result as an assault on your ears. It's direct, in-your-face, and extremely forward. It's the most impolite headphone that I've heard but that makes it so much fun and ludicrously engaging. The AD2K is like the antidote for sleepy/boring planar magnetics and electrostatic headphones! Even compared to other newer headphones like the MrSpeakers Mad Dog, or Fostex TH900, or the Stax SR-009, or almost anything else out right now, the AD2K is still unique and offers things the other ones don't come anywhere close to achieving. I still love it and it's likely that nothing will ever beat it now, including by Audio-Technica!
Not that Audio-Technica's newfangled X brought nothing to the table though. I should admit that I used mostly electronica/trip-hop and metal music on the two headphones, which probably played to the AD2K's strengths more than the X's, because the X was less in-your-face, less forward, less insistent and forward-moving, and less percussively snappy. In other words, the X was a more well-balanced headphone. It smoothed out the original's signature, reducing the mid-bass quantity, making the vocals less forward, and bumping up the dial on the clarity a bit. It also went for a more passive & laid-back kind of sound, with a slightly-expanded soundstage. I guess that all of that should make the X seem like a better headphone, right? Well to me it didn't. I use the original primarily for electronica & metal which it's awesome at. Because of the X's more-balanced signature, it became less engaging to me. Percussion didn't snap as much on it, bass guitars didn't growl as much on it, and bass was just less prominent. The sense of the original's tour-de-force sonic assault simply wasn't there.
In its favor, I guess the X would be an improvement for those who listen to (and like) slower-paced or vocal-oriented music like jazz, folk, alt/indie rock, etc. But for those like me who really like how the AD2K presents extremely fast-paced & percussive music, the X would not be an improvement. And although the two definitely had the same impulse response, the AD2K just
seemed faster because of its accelerator-style sound. The X had more of a moderate running pace to it than something actually speeding up and gearing up to take off into orbit.
I also ran into fit issues with the X as well. Its grip was looser on my head and was prone to slipping, which became annoying. The original's tighter clamp was more secure on my head. For that reason I'd recommend the X only for larger heads, small heads need not apply.
And although the X is spec'd at +1 dB/mW over the original, I actually found that I needed to turn up the volume a bit for it to match the original's loudness at any given volume setting.
It's also possible that the Dynalo/Dynalo+ may not be the ideal amp for the X either. I always thought that the AD2K & Dynalo were a perfect match with each other, but something about the X might require slightly different amping.
Equipment Setup: Plinius CD-101 > HeadAmp GS-X MK2
Music by bands as listed: Diablo Swing Orchestra, Helloween, In Flames, Infected Mushroom, Massive Attack, Megadeth, The Crystal Method, The Prodigy