Sennheiser HD-400 Pro


Studio headphones

  • Open
  • Circumaural
  • Impedance: 120 Ohm
  • Sound pressure level: 110 dB SPL (1 kHz / 1 V RMS)
  • Frequency range: 6 - 38.000 Hz
  • Total harmonic distortion: < 0.05 % at 1 kHz/90 dB SPL
  • Cable routing on one side
  • Weight without cable: 240 g
  • Incl. 1.5 m cable with 3.5 mm jack plug, 3 m coiled cable with 3.5 mm jack plug and 6.3 mm adapter
Design Over-Ear
System Open
Frequency range 6 Hz – 38000 Hz
Adapter Yes
Replaceable Cable Yes
Color Black
available since December 2021
Item number 530787
sales unit 1 piece(s)
Frequency range min. 6 Hz
Frequency range max. 38000 Hz
Max. SPL 110 dB
Type Of Connector Mini Jack
Weight 240 g
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Murluc 20.01.2022
At first I was sceptical that these would be worth their money because I already have two other sets of studio headphones from different manufacturers, but these blew me away when I put them on. The open back design is phenomenal and the headphones work great together with Dearvr Mix to give you the actual feeling of sitting in a mixing room, unlike the other two pairs I own. These headphones aren't the fanciest, they don't fold or twist into a smaller size for easy travel, but what they do is deliver you a fantastic sound that let's you hear what you couldn't hear before. They're basically limited to a studio-like environment or for home use but I highly recommend you get yourself a pair and check them out yourself!


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The Pro equivalent of the excellent Sennheiser HD 560S
eric-65 14.12.2021
More sober look (than the HD 560S); 2 cables instead of 1 (including 1 of 1.8 m; the other is coiled and is 3 m).

Less resolute than a Stax SR-009 (which I have owned), but more neutral (better tone) and more pleasant to hear.
Excellent and sufficient resolution, although there is even better.
Spacious and pleasant soundstage .
Respect for the timbre of voices and instruments, among the best.

Points for improvement: clamping a little too hard for big heads;
A little coquetry in the treble at 4.5 KHz, quite punctual, sensitive mainly for the cymbals, a bit too present; the rest of the tone is "perfect"; good extensions in the sub-bass and the upper-treble.

My best headphones (with the Sennheiser HD 560S), ahead of headphones costing more than 10x more expensive, significantly less balanced for tone.


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