Something that may be important to take into consideration for studio monitoring (not mixing) headphones in general. Having said this though, the frequency response is quite similar to the frequency response that Oratory published for this headphone, so it looks like in this particular instance that non-stock pads are not that far off from the stock pads in this particular case - so I think we got lucky with this one so-to-speak.īass distortion on this headphone is crazy, even at 94dB, so best avoid this headphone. Given the non-stock pads perhaps we can't place much faith in the measured frequency response though, in terms of it representing a stock K240. I'd imagine stock or non-stock pads wouldn't influence the negative aspect you noticed when you say 'During playback I could feel the entire cup resonating with each note.', then I think that's a bit of a red flag for this headphone regardless. I'm a bit dubious about the validity of measuring a headphone for a review when it doesn't have the stock pads fitted, as this would certainly influence frequency response as a minimum.I'm not sure if it could have any other positive or negative effects on distortion, and if the original pads were angled (don't know if they are) then any non-stock pads used that are not angled could potentially damage the soundstage aspect too.

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