I translated it:
Background & preferences
I like the sound as natural as possible, and that I can listen to music for hours. What does that mean? Yes, it means that one can ignore the word "natural" because everyone here on the forum has an opinion about what is natural. Some would argue that "natural" is that the music / vocals / instruments reproduced natutro. And such a statement is obviously correct. The disadvantage is obvious. Few of us have heard of an artist / instruments live. And, with live, I mean without getting the sound reproduced via a speaker system at a concert, but just for example. guitar and vocals directly. Had some time ago, people here at home to first and foremost a social gathering, but also to speak out / listen to the stereo. "Hm. Vocalist from Minor Majority sound younger on your system, than in my home." So is the acid test when, how sound as a vocal for Paul Angelskår really into reality? Without that you have heard it directly, and not reproduced by a loudspeaker system, it is impossible to know - other than to guess. So, we guess. I thought that my system / room was neutral, while the other guest said his facility / room was neutral. Which rooms / facilities restored album [i] Reasons to Hang Around [/ i] (2006) [i] best [/ i] is a completely different dish. And where we are at the core issue: Forget the word "neutral", but focus on the subjective experience / sound reproduction a plant (or in this context, the head-fi) can provide. I therefore look away from the word "neutral" in my review below, and focuses more on the relative differences.
HifiMAN HE-500 Vs. Audeze LCD-2
Let me first start with a relatively well described headphone many have heard, even if all those who have heard this has not been playing the same music, have the same taste in music and has not used the same source / amplifier. This is in spite of this a konsenus - AKG K701 (K702) in its very specific sound signature. However, varying impressions of "K701 has a natural bass", "K701 has unnaturally small bass", "K701 presents female vocals very well," "K701 sounds ongoing / thin", etc. But, you know all about already, so I will not dwell more with K701. The point is that some will say that "HE-500 tracks the thirteenth / fatiguing" and some would argue that "the LCD-2 songs thirteenth / fatiguing." Looking for LCD-3, which has just been launched, the feedback in the same lane. "LCD-3 is too Revealing / fatiguing", "LCD-3 is the most transparent headphone I've heard". Latest addition is that several users have removed the metal grill on the LCD-3 and added a thin layer of paper under the grill and the sound is tuned a bit "darker". Some say that the LCD-3 similar to the LCD-2 rev. 2 and especially for "paper ready". Others react to this, arguing that the LCD 3's strength is that the headset just manage to differentiate so well on various recordings and quality of same. I do not know, but have a feeling that LCD-3 is not the big hit'n. First and foremost, because it costs twice that of the LCD-2 rev. 2, and second, that "diminishing Returns" almost has manifested itself in some by LCD-3. Now there are few, if any, headphones that recognized users of head-fi.org "bother bother" to compare with Stax's flagship for 34,000 Norwegian kroner, but LCD-3 is one of them. It does not mean that LCD-3 can be interpreted to sound like Stax SR-009, but that transparent truth is near. Ie., Based on what I read, the SR-009 is better at reproducing micro detail and possibly seamlessness, while LCD-3 has a bass that is even better than LCD-2 rev. 2, which is also better in that domain than the one and SR-009. But, before I completely off track, let me return to the HE-500 and LCD-2 and your original question about "What do you think that sonically at least the thirteenth / fatiguing and possible. Why?"
My ears. My taste in music. Etc.. You know all this, so I will just say that the K701 initially intrigued me. Sennheiser HD800 intrigued me even more. LCD-2 rev. 1 gave me a warm heart and tore. 2 likewise. HE-500 gave me the same love and desire to listen to much music. K701 was not so long time before I sold, because although it gives a lot of sound money that does not help the sound if it does not pay off in terms of ability to listen for hours every day to music. HD800 is the individual who has designed sound too bright. I do not think so. Having said that I will honestly admit that the reason that I liked (and still do) HD800 from Sennheiser is that it provides more bass and thus "tuner" sound signature down slightly compared to K701.
HD800 survived (relatively) long with me, and after the LCD-2 rev. 1 came in the house, it was apparent that K701 and HD800 were better than the HD800 LCD-2. HD800 followed the same path as K701 - used market. Why? Not because some of them were bad. Tverit against it, but why was the core answer to your question. Could I hear a lot of hours on the K701 without listening fatigue even with DAC and amplifiers that are referred to as "little progress"? No. Could HD800 however, give me more? Yes. Could the LCD-2 rev. 1 give me even more? Definitely.
Several well-known users of head-fi.org reviews LCD-2 rev. 2 and HE-500 as quite similar. I can say I agree with it IF you have a reference point for K701 and HD800. Reciprocal differences between the HE-500 and LCD-2 (rev. 2) quite prominent, albeit on some parameters like (in relation to the aforementioned AKG and Sennheiser).
I now feel the temptation to mention differences (bass, vocals, treble, soundstage, coherence, naturalness, drivbarhet, good vs.. Bad recordings, live reading of involvement / representation on high vs. Low volume, comfort, etc) in detail based on certain "demo songs / genres." I will not do, but refer to your home theater the next number is 30.11. A small selection of music available here: http://loevhagen.blogspot.com/search/label/Musikk
Answer the question (aka "tl: dr")
None of them provide sound thirteenth / fatiguing, because they are both tuned frequency wise so comfortable that it is listening for hours on them is no problem. Rather, a very positive experience for a lot of varied music and quality recordings. PostScript: I would assume that since you are concerned fatiguing not prioritize classical / symphonic music that the majority of the hours you will use to head-fi. Is my assumption wrong, select HE-500, which simplified, is tuned "brighter" than LCD-2.
Hope this was of some help. Have a good lydhelg. Thank you / you read this. :)