Sennheiser HD 400 Pro released
Feb 16, 2022 at 9:45 AM Post #61 of 71
If they wouldn't have those protudings inside, I would try them based on your comments (and, of course, on their price... You are not talking about 3 thousand € Kennertons here :relieved:)

I talk about it a bit in the French forum (*), after listening to the soundtrack of the movie Avatar; well the two planar Kennerton headphones (Thekk and Thror) (at more than 3 K each) are quite disappointing (compared to the HD 400 Pro, at 0.25 K); my Thekk will stay in its window (showcase), to admire the beauty of its wood, sheltered from dust, while the HD 400 Pro will stay next to the Viva 2A3 tube amp to continue listening (with it) to my favorite musics and viewing (and listening) my favorite movies, without shortening the extreme low and high frequencies, and without distorting the timbre of voices.

(*) here : https://www.homecinema-fr.com/forum/casques-sedentaires/sennheiser-hd-400-pro-t30117973-435.html

If you insist, since I am the owner of these four headphones, which I still own (with my oldest son): The Kenerton planar Thror headphones, the open flagship of Kennerton (price 3.6 K); the Kernerton Thekk (price 3.1 K) ; the Sennheiser HD 560S (price 0.2K) and the HD 400 Pro (price 0.25 K).
On the technical level, despite their different technology, the four headphones are similar; however, for the tonality and the regularity of the frequency response and the extension of the sub-bass, the two Sennheiser headphones are far ahead the Kennerton.
The listening experience is much more just and faithful with the two Sennheiser headphones, while remaining pleasant and lively.
A small preference for the HD 400 Pro and its little extra bass (for my copy).

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Kennerton Thror FR

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Kennerton Thekk FR

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Sennheiser HD 560S FR (my copy)

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Sennheiser HD 400 Pro (my copy)

(NB: 10 dB SPL separate each horizontal band; the last horizontal band peaks at 90 dB SPL: highest horizontal dotted line).

EDIT:
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HD-560S versus HD-400 Pro (chosen as reference headphones) (in relative dB)
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Kennerton Thekk versus HD 400 Pro (chosen as reference headphones) (in relative dB)


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Hifiman Susvara versus HD 400 Pro (in relative dB)

Original post in French, here : https://www.homecinema-fr.com/forum/post181116799.html#p181116799
 
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Nov 30, 2022 at 8:10 PM Post #62 of 71
What I want to know is if it reacts to a higher source impedance in the same way as the 560s.
 
Dec 1, 2022 at 7:25 AM Post #63 of 71

x1_desktop_HD_400_PRO_Sennheiser.jpg

https://en-us.sennheiser.com/hd-400-pro

open back
249$

Technical Data​

  • Impedance
    120 Ω
  • Frequency response
    6 Hz to 38 kHz (-10 dB)
  • Sound pressure level (SPL)
    110 dB (1 kHz / 1 V RMS)
    • THD, total harmonic distortion
      < 0.05 % (1 kHz / 90 dB SPL)
    • Ear coupling
      circumaural
    • Jack plug
      3.5 mm jack plug with 6.3 mm adapter
    • Weight
      240 g
Nice specification. Not much difference from other Sennheiser HD products.
 
Dec 14, 2022 at 11:33 AM Post #66 of 71
For all intents and purposes, they're both black.
Black as the day is long, man.
 
Apr 4, 2023 at 9:59 AM Post #67 of 71
Hello everyone.

Sennheiser HD 400 Pro vs HD 560S (my two copies) vs HD 58X Jubile (my latest headphones): (short) comparative listening impressions.

To begin with (pending the imminent delivery of the HD 58X ordered from massdrop), my copy of the HD-400 Pro is a little more "bassy" with slightly less treble than my copy of the HD-560S; it's (for me) obvious when listening; it sounds a little less clear and airy than the HD-560S.

The two Sennheiser headphones are reasonably neutral (and this can be understood concerning the tonal accuracy of the voices) and sufficiently defined (detailed) to appreciate both MP3 (YouTube videos) and Blu-ray audio (PCM audio tracks) and audio CDs (on a very good CD player); the difference in resolution can easily be understood depending on the medium used. The limiting factor in sound reproduction is most often linked to the quality of the recording (including sound compression), not to mention typical headphone listening (sound around the head), but in a non-claustrophobic way (open headphones, obligatory).

After receiving my new HD 58X, I was able to make a precise comparison with my HD 400 Pro, which then served as my reference headphone (my best headphone to date).

I translate here part of the comparison made between these two headphones that can be found in full on the French forum, at the following link : https://www.homecinema-fr.com/forum/post181129278.html#p181129278 (note: you can use google translate for non-French speakers).

After receiving my new HD 58X, I was able to make a precise comparison with my HD 400 Pro, which then served as my reference headphone (my best headphone to date).


Comparison HD 400 pro vs HD 58X
(my two copies).

When listening, the HD 400 Pro is clearer in tone, with a low treble level (4.5-6 KHz) significantly higher than that of the HD 58X: this extra treble of the HD 400 Pro has the positive side of giving more clarity to the sound, which appears more spectacular, more airy, and also more dynamic in the treble; the legibility of voices is increased. In return (negative side), I agree with the opinion of Julien cleriensis (sound engineer) who qualifies this overrepresentation of the low treble of the HD-400 Pro (between 4.5 and 6 KHz) (and for my copy, even more my HD 560S) like a coloring that harms the timbres of the voices, overplayed and a bit artificial, a little thin too.

The other obvious tonal difference between these two headphones (at least to my ear) is that, somewhat surprisingly, the HD 58X (my copy) has more mid bass than my copy of the HD 400 Pro. ; the bass (like the bass guitar) are more present and "heavier" with the HD 58X than with the HD 400 pro, and you can hear it.

Otherwise, I listened quite a bit to the voices (female and male) on this Live concert (above), in different registers and different tones and even expressiveness (ranging from the purest lyrical singing to the most guttural vocal sound ), and my conclusion is that the timbre of the voices, both female and male, seem more accurate to me with the HD 58X (than with the HD 400 Pro); as already said, the HD 400 Pro overplays the voices a little in the treble, certainly in a more readable way, but also less credible by being leaner and probably less accurate in tone (for the timbre).

Last funny thing I noticed; in the first extract of the video below, at time 3 minutes, we hear the explosions of fireworks (in the open air); well the explosions seem more believable to me (for the memory that I have of this kind of pyrotechnic events) with the HD 58X than with the HD 400 Pro (with a leaner and clearer tone for these pyrotechnic effects with the HD 400 Pro) .

Otherwise, in the second extract from the video below, at time 4 minutes, the singer's voice seems more accurate to me with the HD 58X than with the HD 400 Pro.





Finally, I agree with René that the HD 58X headphones are not spectacular headphones, in any case less spectacular than my HD 400 Pro, whose over-representation in the treble will give a certain effect of over-definition, clarity, increased readability and even increased dynamics in the treble. It is probably the same with the HD 800 versus HD 800S.

Finally, going from HD 400 pro to HD 58X, well, it's a bit like going from HD 800 to HD 800S ...

PS: Some photos (attached) concerning this comparison of these three Sennheiser headphones.


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A very nice trio of Sennheiser headphones: HD 58X at the bottom; HD-400 pro top and left; HD-560S top and right.

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Apr 14, 2023 at 4:10 AM Post #68 of 71
Hello to all.

What should I do with my three Sennheiser headphones (HD 58X, HD 560S and HD 400 Pro), with the same effective sensitivity of 110 dB / 1 V RMS?

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Their use is quite found.

HD 560S and HD 400 Pro for a listening with the headphones (with two) for a Home-Theater use; my preference of these two headphones compared to the HD 58X, for a better spatialization of the sound; not for the precision of the soundstage but for the greater volume (space) sound provided by these two headphones (more spectacular); a greater clarity of sound and legibility of dialogues (clearer); finally, a better extension in the sub-bass for the special effects of the cinema films, even if in fine, the tone of the explosions (of a firework on a live concert) is more realistic, tonally speaking, with the HD 58X than with the HD-560S/HD-400 Pro (of clearer tone, but more spectacular).

HD 58X for a Hi-Fi listening of music and recorded concerts, for its greater fidelity for the tone, in particular the more accurate tonality of the voices and string instruments (of which guitars, but also instruments with bowed strings).
 
Feb 22, 2024 at 5:52 AM Post #70 of 71
There is a new variant of the hd560s which you can tell by the included cable which defaults with a 3.5mm termination and a 1/4 inch adapter instead of having a 1/4 inch by default. The sound is more balanced and less weird in the highs vs the older hd560s.
What I am wondering is whether they tweaked something in the headphone to change the response or if the pads were changed to a different one. If anyone has any information about this, please chime in because these new hd560s are amazing in their tonality. Certainly better than my hd58x and my old hd560s. I would really want to buy the same exact pads when replacement time comes due to this amazing tone.
 
Mar 26, 2024 at 9:31 PM Post #71 of 71
There is a new variant of the hd560s which you can tell by the included cable which defaults with a 3.5mm termination and a 1/4 inch adapter instead of having a 1/4 inch by default. The sound is more balanced and less weird in the highs vs the older hd560s.
What I am wondering is whether they tweaked something in the headphone to change the response or if the pads were changed to a different one. If anyone has any information about this, please chime in because these new hd560s are amazing in their tonality. Certainly better than my hd58x and my old hd560s. I would really want to buy the same exact pads when replacement time comes due to this amazing tone.
They did change something, looks like a silent revision and listening to consumer feedback. Check here for more details, updated measurements, and pad replacement recommendations. :)
 

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