Pros: instrument separation, airiness, bass
Cons: nothing...besides the typical lack of comfort
Any Grado fan who hasn't heard this model MUST check it out.
Pros: natural, musical & detailed
Cons: need to buy a new amp
Overall Sound Signiture: Natural & nutral,a bit darker than SR325is but far from a dark sounding headphone, they are perfectly balanced in all frequency. Excllent instrument seperation, not huge but fairly good soundstage.
Bass: Accurate, deep without bloating, great quality.
Mids: Smooth, neither too forward nor too distant, accurate, not as forward/engaging as grados.
Treble: Accurate, balanced, without being harsh, might not as fun as some grados.
When paired with pico, they give me an impression that they have a slightly roll-off treble, but when I listen to them strait from an ipod, they sound perfectly balanced to me, without being roll-off in any frequency range. Maybe I should get a new amp for them. Pico works well with Grados, but not so good with mspro & er4p because it will tame the highs a bit then break the balance sound.
Edit: What bothers me about the mspro is its roll-off treble, which sound dull to me at times. That is the reason why I end up with a decision that not to keep them.
Easily more detail than the k702 I own, and much more musical, a pleasure to listen to. I'd rate them the same as the Grado RS-1.
Cons: price if you don't know where to look
These are my favorite "Grados". With flats the bass is incredible. The midrange is so lifelike you are taken to the front stage of a concert. I've tried a lot of headphones and these are what I always go to and the price is reasonable. Mine are the i (latest improved) version. I highly recommend these to anyone with a Solid State, Hybrid, or OPT Tube amp.