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I haven't listened to the k701, but the HD650 certainly has the most bass of any Senn. It doesn't have as much bass as any Beyer I've tried. To my ears, the HD650 is the most refined HP on my setup.

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I don't perceive it.

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Dunno if you are being sarcastic or not, but listen to something that has flatter bass and then go back to HD650. It DOES have lush and warm bass that is bit stronger than rest of the frequencies. Some even call it muddy. *hides*

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Are you saying that the Sennheiser "tailored" approach to *measured* headphone response doesn't actually yield a *perceived* flat acoustic response? Hmmm, that's not what I hear, no no.

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Me neither. :^)

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Oh, the bass is definitely higher than flat, but it doesn't sound slow or flabby.

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...this feels like some one is saying "Grados are not bright and aggressive". (from technical POV, not persons feeling if he finds it bothering or likes it)

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have you listened to the HD650 yet Maza? This is the danger of generalizing on this forum too much I heard so many of you say the Sennheisers were veiled.....but the one veiled headphone I've heard is the DT770! Huge lush bass, recessed mids, yet some extended treble. Now Senns do have a softer treble then other cans....but the mids can stay more consistant as well. You look at the bass humps.....and a lot of cans are like the Senns with their bass.

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And thats not what i meant either. But the bass is very noticeable in Sennheisers house sound, thats what i meant. After quick look at the graphs, K701 should have as much, if not more bass than HD650, but SeagramSeven already pointed the high frequency thing that might be the issue here.

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No, not HD650. But i have owned HD595, and have readed a tons of reviews and comparisons how it differs from HD580/HD600 and HD650, so I have pretty much a good theorised idea about the higher end Sennheiser sound. And th e graphs confirms all that i have readed. =255&graphID[]=243&graphID[]=249]http://graphs.headphone.com/graphCom...phID[]=249

From my experience with HD595, mids and bass were never a problem, its the highs feeling like they have black holes and such. This, i believe, is the infamous Sennheiser veil some people are hearing (including me), and even gave me impression that the bass is stronger than what it really is. (even though HD595 is very FLAT in bass, my ears told me that it is a bass prominent can!!! And it should be brighter and grainier than HD6x0 serie. Thank god i never bought HD650...)

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The 650 bass sounds thick and excessive to my ears. When I heard it balanced, it was somewhat tamed but not to the degree some seem to post about here.

So, if the K701 has the right amount of bass for you, the 650 will bowl you over

If big bass is your thing, then the 650 will sound flat I suppose. I guess that's where the extreme different views are coming from. Or it could be fanboyism. You be the judge

Nevermind my earlier voice of reason post; The Senns fanboys win, its perfect and everything else sux, including reason, end of story....
happy

/Caveat on systems with all bright components downstream and with a $250 bright recable job. It sparkles with a warm soundstage

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Still, you owe it to yourself to listen to these headphones before forming an opinion IMHO. The overall treble of the HD650 is softer, so bass can be more pronounced then other headphones. It's a well refined headphone....and since Hi-Finthen keeps jabbing me with "warm soundstage", I always have to throw in a disclaimer To me, Sennheisers are more natural because bass is what reverberates. They still have enough mids to carry detail. If you have a soundstage, you also need some bass emphasis. The k501 is an example of a weird headphone to me....large soundstage, but recessed bass. While the HD650 may have more bass then other Senns, it's still not overpowering like the DT770. I percieve the DT770 as veiled: even though the very high treble is higher db then Senns, all of the middle ranges dip (compared to the rest of its range). I frankly think it would only be a fun headphone if you're into rap or trip hop.

I'll agree with Robm321 about whether you enjoy the HD650 or HD600 more: it depends on your taste of how you deem bass to be natural, and if you like that extra treble spike in the 10K region. Neither are really great for bassheads (check out threads and bassheads complain of the HD650 not being bassy enough)

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My guess.

The Akg-701 is a well balanced headphone that does not reverberate with bass.

The Senn HD-650 is overly warm to dark in their mid level frequency response with bass heavy promenance to their presentation of music. They veil the musics transpearency to the listener with a room full of bass like some like it.

Nothing wrong with that, in fact that a headphone can reproduce that club feeling with its bass output is what headphones should do for contemporary listeners, because that is important to certain forms of what's called music, that is being reproduced.

Of course, these folks can see no use for a phone like the k-501... That is due to their referance... And that is why and how the 650 was designed, for a marketplace which is full of home theatre subwoofers and auto subwoofers. Its a wonderful thing