QUOTE(polkiuj @ Nov 29 2011, 10:23 PM)
I have personally tried the Superlux HD668B AND Shure SRH440.
The SRH440 is light years ahead of the HD668B, both in sound quality and build quality.
The 440 is plasticky and cheap feeling. But it still feels like a chinese product made by a branded company. The 668B just feels like a cheap china product (those flimsy stuff that cost RM10 or so).
The 440 sounds boring and not engaging. Lacking warmth, thickness, extension and feel. It's not a bad headphone but U must like the sort of sound it produces. It does have bass (quite flat response), mids and highs (bit sibilant from what I can remember). Keep in mind that it is a monitoring earphone and therefore sounds like one.
The 668B just sounds like a wannabe product. It has super sharp piercing highs and LOTS of it. It is extremely sibilant and painful to listen to. The mids are pretty much nonexistent. I've never heard vocals so far away before. When I turned the volume up to hear the vocals, the sibilant, piercing highs comes and kill me. I can't even remember how the bass is like because the piercing highs are just too distracting. If you like that kind of sound, you'll love the 668B.
My recommendation is: If you live anywhere near Jaben, go try them out! Jaben has the 440 and although Jaben does not carry the 668B, they have a unit to try out. If you like how it sounds, wa-la! $$ saved.
Source for testing: HifiMan HM-601.

Seems like you do hate treble. Me too. But using the light years ahead thing is way overstatement of the performance of the Shure SRH440. Actually most of your point I already have written down in my previous post. They do
looks like RM10 stuffs but their plastic can withstand torture better than more expensive stuffs. Shure is not as bad in looks but they still feel plasticky.
I will not be direct comparing the 440 to 668B because I do not have them but I'm comparing the HD668B to all my range of headphone available. Just like what I did point out, they won't be as smooth sounding or as refine. But the hd668B balanced are so good that I think that is the most ideal balance for a sound. Of course their lack of smoothness of those higher end will show the effect you have stated. With the right combo, the sibilant or sharp treble may not be as noticeable. For me the mids are not that bad at all and very good for such price. And the soundstage though is available it is not big enough for me. (Many in this price range doesn't even have a proper soundstaging) The bass is more emphasize on the midbass punch and though they can produce the low bass they still don't have enough for it.
And both 440 and 668B are monitoring headphone hence the piercing highs you hear on HD668B (although not all are tune that way but some are being tune like that) HD668B are highly used in monitoring in their home country, taiwan and if I remember correctly they are sold more expensive in there than here. Sorry I'm just trying to remain neutral in here.
And one more thing HD668B does require amp to shine in which Hifiman HM601,602 are unable to provide. Besides that I also find that HD668B does scale up with higher end equipment very well which I doubt the 440 can scale up as well as 668B to higher end system. Then again those cons of superlux will still brought out but at a lesser degree.
It's best for TS to bring your source to match with both the headphone and see which has the best match/synergy with your system and which one suits your taste. If you really want to analyse song then the 440 is hands up but if you want to listen to song then I recommend superlux. Its like how Mike said though the the higher end have better refinement and smoothness, that does not neccessary translate to musicality for you to listen in everyday life. We are listening to music and not analyzing our equipment. If you can, ask someone with HD660 to meet you in Jaben to test it out can help you better in making your choice.
To end it in most simplest form, 440 for smoother and refine sound, superlux for musicality.
QUOTE(polkiuj @ Nov 29 2011, 10:52 PM)
yea, most people like monitoring earphones somewhere in the middle of their audiophile journey. =)
after you get out of the audiophile state and start listening to ur music (not ur eq) then your sound preference changes drastically. =D
Yup we started off to listen to eq a lot. After a while only we start to listen to music as a whole instead of finding faults from the headphone or headphone system. Basically I'm in the the listening to music as a whole state right now. That is why I emphasize a lot on musicality of the system. Not enough detail, not enough smoothness or the balance is off, never mind. It is the music that is the most important to me.
Added on November 29, 2011, 11:41 pmQUOTE(viruz019 @ Nov 29 2011, 11:15 PM)
TS,
personal experience, between those, my pick is Shure SRH440. My initial plan was between Shure SRH240 and Audio Technica *forget wat model* and i decided on SRH240 but, blame Jaben for poisoning me with SRH440 and ended up forking more money on 440.
The 440 sounds amazing but do note, you will feel lack of bass but the clarity and soundstage will cover it up n make it feel really good

Soundstage part definitely 440 will win when compare to superlux (HD668B) Clarity I would say both should be in equal stance with just different way of presenting it.
I also forget to add that, mike did a review on HD660 is not tuned to have as much treble as HD668B so you should definitely give it a try.
Source:
http://www.headfonia.com/the-new-superluxe...-and-the-hd660/If you really did find HD660 to test with both the HD668B and 440, please retain yourself from looking at the price tag and the designs or poor quality plastic/Not smooth cheap looking but they are hard enough. If I remember correctly Superlux uses ABS plastic. The benefit can be found from here
http://en.wikipedia.org/wiki/Acrylonitrile_butadiene_styreneJust remember don't look at the price tag and focus on the music instead. I myself sometimes also find myself to look at the price tag when auditioning in Jaben to buy my headphone. Try to find the one that suits you the most and not price tag.
This post has been edited by Akuma no Hana: Nov 29 2011, 11:41 PM