DT250 (250Ω)

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NO SMOOTHING is applied to the shown plots. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and ‘wiggles’. I do not use smoothing because some info about sound quality is lost when plots are smoothed.

Aside from a small correction of the microphone itself also some correction in the lowest frequencies is applied to the plots to compensate for the perceived loss of bass when using headphones. This is described HERE in more detail.
A ‘horizontal‘ frequency response curve on the shown frequency response plots on this website thus indicates a perceived ‘flat’ tonal signature.

ALL measurements are made with a good SEAL on a flatbed measurement rig.
The
shape of your head, bone structure, pad size, pad ‘softness,  (compliance), hair or no hair and or wearing glasses may (drastically) change the frequency response of some headphones, so… your personal experience may differ substantially from these plots.

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Beyerdynamic DT250 – 250 Ohm

DT250-250The Beyerdynamic DT250 is a headphone intended for professional usage. This means it is modular, in that a microphone can be fitted and that it is a rugged headphone with a rather high clamping force.
It has soft and comfortable velours earpads and if it weren’t for the clamping force, which is higher than for ‘hifi’ headphones, it could be worn for long listening sessions. Very light weight headphone as well.
The headphone is fully closed and provides excellent isolation from outside noises (yet another pro feature).
The sound is VERY neutral and accurate though lacks a certain finesse compared to the top-end headphones. Those looking for a reference quality headphone that exactly shows what’s in the recording these headphones will do very well.
This is one of these affordable (€ 150.-)  headphones that is worth owning if you like a realistic sound and are on a budget and only need/want one headphone.

The frequency plot below shows some driver imbalance. This imbalance is caused by leakage of the cable entry being present only on the left side.
There is an easy fix for this which is shown HERE
Otherwise a great looking and neutral frequency response that is ‘flat’ from 10Hz to 18kHz +/-3dB (assuming the measurement rig is accurate in an absolute sense). The DT250-250 sure sounds the way it measures as well. Very neutral with a just very slightly less refined top end for critical hifi listening. left, right

Beyerdynamic DT250-250 L+R

The CSD of the DT250-250 is quite good and shows no deal breaking resonances above 1.5kHz. left, right

CSD Beyerdynamic DT250-250

Highly recommended for studio usage and for critical listening at home with a real neutral sound.
An amplifier is certainly recommended as it is rather high impedance.
Negatives are the rather high clamping force (for long term listening) and the ever so slightly less refined upper end treble.

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