Originally Posted by metal571
That's not how they sound at all.
I always look at RAW FR graphs because I completely disagree with the kind of garbage HRTFs that get applied to measurements to different sites. For me, I'm looking for a gradual peak of about 10 dB at 4 kHz followed by a dip to flat centered around 6 kHz and then another boost to no more than around 5 dB at 10 kHz. The 440s fit this precisely. For me the K240s have a large upper bass warmth that is heavily boosted, VERY natural mids (I do love that part about them), but a grinding peak at 10 kHz that hurts after a while. The SRH440s sound incredibly neutral to my ears, regardless of what graphs say. I agree most with HeadRoom's K240 MKII graph (with 280 Pro for comparison. Keep in mind this is a tight 15 dB scale and is a raw FR with no HRTF):
5 dB boosted upper bass, perfectly natural mids with just the right hump centered around 3-4 kHz, but grating highs boosted by over 10 dB from flat. The 280s sound "dead" with rolled off highs, but a much more easygoing 5 dB peak at 10 kHz. They have scooped midbass and slightly boosted (MASSIVE in real life) sub-bass. I love the 280s for electronic music. I find the 240s best for classic rock from the 60s, The Beatles sound amazing on them.
The SRH440s sound most like the raw plot (in gray) on InnerFidelity:
We're centered around -25 dB on the raw FR graph. Super flat with a perfect 10 dB peak at 3.5 kHz, a return to flat at 6 kHz, then a gentler 5-8 dB peak at 10 kHz. There's not as much sub-bass roll off on these as the raw FR would indicate, they've still got plenty of bass. Just the right amount if you ask me. Quite simply, the SRH440 is one of the most neutral headphones in this price range without a doubt. That's about the best idea I can give you as to what all of these headphones I've actually owned really compare in real life, and I can back it up with RAW measurements because HRTF used between different FR graph sites can be quite different from each other.
This tells you nothing about the soundstage though. The K240s might have one of the widest soundstages in this price range, that's their strongest suit aside from their organic mids. I personally hate harsh upper mids. I once had an MDR-V6 which I sold after a short time because the 15 dB peak on just about every raw FR graph was just incredibly painful in real life. I have no clue why people call those neutral, they're not at all. Not to my ears. Just another comparison :)
I STRONGLY support people comparing headphones via raw FR graphs keeping in mind the kind of HRTF they want to hear. Raw FR graphs shouldn't be completely flat. I don't know if anyone else on the forum knows about this or uses this method often, but I figured it out for myself and it has worked really well for judging sound of headphones via graphs across sites...just not soundstaging or comfort obviously.