i just received the IM70 in the mail today and i am listening to them now... and they are not what i expected. my first impressions and thoughts were that these remind me a bit of the cmk500. I guess that's attributed to the ATH sound signature. The overall sound is a bit boomy and veiled, which is not a bad thing. The bad part i ran into is that anytime i use an EQ on my phone (HTC One with poweramp) there is a slight hum and the headphones don't like being pushed. Listening to the intro to Dave mathews - #41 there is heavy distortion and you hear a hum and a high pitch ring in the silent parts of the song. The eq setting is basically a slight bass boost which is the same eq settings i use on the GR07 BE. While Dave mathews gets ripped apart other songs like block party sounds great, but the hum and ring is still there.
Keep in mind i did reset the EQ to flat and i slowly pushed the bass and the treble up to see if it was a bad setting and i still got distorton. Has anyone else experienced this?
Setting the EQ to FLAT! This is where these bad boys excel. There is no distortion sound is great and balanced with a nice boom. The mids and vocals are slightly veiled but feel roomy. Reminds me of the sound i get with i muffle the ATH 700MKII Pro. I plan to try and break these in a bit and then see if the sound changes. If not I might return them.
Not being a fan of trebel, the IM70 needs a slight boost of trebel to get past the veil sound.
The memory foam is slightly annoying but i will get used to them overtime. I am spoiled by the cable for the GR07 BE which i feel should be the standard. The fit is OK. I get a good seal but they aren't as comfy as the GR07.
With that said... I do like them. I just need to get used to a new sound signature and see if i get ear fatigue.
I use the HTC One with poweramp and do a considerable amount of EQ tweaking myself. Have you turned off beats audio and have you turned down the stereo x and turn off limit?