Modded 250Ohm version sounds really nice, I just put them on after keeping in storage because of ATH-R70x.
I can definitely see how this could be an end-game headphone for some people, a retirement headset, as someone has mentioned around here. They're durable (passed the sit-on test) while being capable of very satisfying and pleasant rendition of music that is probably quite close to how it should sound. The music is presented as a beautiful whole, a full performance where every instrument is just there in it's place both tonally and in the sound-stage. This could be a retirement headphone literally, because of the slightly sparkly treble, just a little top-end sparkle. Vocals sound great, there's a slight emphasis on them compared to ATH-R70x which is really good. A weird thing to say, but DT250-250 sound earthy, organic and natural to me. When you put these on, you hear music, a performance, not details; separate parts don't call for attention. They're like here's your music bro, chill out. Not suitable for commuting as they isolate poorly in the lower frequency region.
My personal recommendation in the price range for their sound.
Edit :: 2016-04-28:
Same impressions when returning to them. They bring every note and nuance in music that it sounds like it provides the 'whole picture' without focusing on unimportant details.
Edit :: 2019-01-14:
My review still stands. I've modified this headphone since purchase, put some acoustic foam and sealed the input socket. Kick drums sound big, quick, impactful, punchy - this headphone has a "big butt" to its sound. But it's hard to tell apart the lowest notes when playing my synth - A1 and B1 notes sound unacceptably similar. So the sub-bass resolution is lower than my 600ohm DT990, Mayflower T50RP mk3 v1 and modded mdr-ma900. This might be fixable, just need to refine the mod, maybe add a bass port or completely close off the headphone, not sure...
I can definitely see how this could be an end-game headphone for some people, a retirement headset, as someone has mentioned around here. They're durable (passed the sit-on test) while being capable of very satisfying and pleasant rendition of music that is probably quite close to how it should sound. The music is presented as a beautiful whole, a full performance where every instrument is just there in it's place both tonally and in the sound-stage. This could be a retirement headphone literally, because of the slightly sparkly treble, just a little top-end sparkle. Vocals sound great, there's a slight emphasis on them compared to ATH-R70x which is really good. A weird thing to say, but DT250-250 sound earthy, organic and natural to me. When you put these on, you hear music, a performance, not details; separate parts don't call for attention. They're like here's your music bro, chill out. Not suitable for commuting as they isolate poorly in the lower frequency region.
My personal recommendation in the price range for their sound.
Edit :: 2016-04-28:
Same impressions when returning to them. They bring every note and nuance in music that it sounds like it provides the 'whole picture' without focusing on unimportant details.
Edit :: 2019-01-14:
My review still stands. I've modified this headphone since purchase, put some acoustic foam and sealed the input socket. Kick drums sound big, quick, impactful, punchy - this headphone has a "big butt" to its sound. But it's hard to tell apart the lowest notes when playing my synth - A1 and B1 notes sound unacceptably similar. So the sub-bass resolution is lower than my 600ohm DT990, Mayflower T50RP mk3 v1 and modded mdr-ma900. This might be fixable, just need to refine the mod, maybe add a bass port or completely close off the headphone, not sure...