ATH-M50

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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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audio-technica ATH-M50 (old version)

DSCN2452

The popular audio-technica ATH-M50 in stock form. This is the older type and a heavily used one at that. It sounds the way it measures. Dark (fat, a bit bloated) and the upper mids sound somewhat absent.

It should be noted that the later versions are considerably ‘flatter’ and sound much better. The later versions are still a bit on the bassy side of things but not nearly as much as the earlier versions. Hard to pin a date on the changes (and what they actually are) but I suspect around the start of 2012. The looks haven’t changed so when buying second hand you might end-up with the older version.

ath-m50 older type

The CSD below shows the problems it has. On the left you can see resonating lows and on the right above 4kHz there is some very slight ringing. From about 600Hz up the behaviour is nor problematic.

ath-m50 older type - wf

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