Just got mine and I'll be keeping them, I may even stop grinning in time but it will be a while. ![Big Grin :D :D](/styles/default/xenforo/vbSmilies/Normal/biggrin.gif)
They make a great complement to the HD650, both have superb mids but the similarities end there: The HD650s have rolled off sub-bass and a mid bass hump, while the HD400i is much flatter and the bass goes waaaaay down low; the HD650 tends to roll off the highs while still providing lots of detail, which is where the "veil" comes from, whereas these have very detailed and airy highs; I find the soundstage to be slightly wider and more 3 dimensional than the HD650 and the instrument positioning is far more precise than the Sennheiser.
Between the HE400i and HD650 I think I hit my end game as there is little point in going further with my 60yr old ears (can't hear anything above 12kHz)
I can see where you are coming from in your comparison with the K712, they are like my modded K702 on steroids but with a lot more bass.
For this type of signature you probably do need to go to HD800/800S for an obvious improvement, the K712 is a hell of a headphone.
![Big Grin :D :D](/styles/default/xenforo/vbSmilies/Normal/biggrin.gif)
They make a great complement to the HD650, both have superb mids but the similarities end there: The HD650s have rolled off sub-bass and a mid bass hump, while the HD400i is much flatter and the bass goes waaaaay down low; the HD650 tends to roll off the highs while still providing lots of detail, which is where the "veil" comes from, whereas these have very detailed and airy highs; I find the soundstage to be slightly wider and more 3 dimensional than the HD650 and the instrument positioning is far more precise than the Sennheiser.
Between the HE400i and HD650 I think I hit my end game as there is little point in going further with my 60yr old ears (can't hear anything above 12kHz)
I can see where you are coming from in your comparison with the K712, they are like my modded K702 on steroids but with a lot more bass.
For this type of signature you probably do need to go to HD800/800S for an obvious improvement, the K712 is a hell of a headphone.