It has more of the tight and snappy which is a good thing.
Clarity is a weak point. There seems to be 'sludge' covering the vocals. Can sound chalky a bit.. Like a minor cold. This isn't just with vocals but with the entire spectrum. This can be annoying to people who own the 880/701/SA5000/48's. You can easily tell it's short comming by comparisons. Midrange is on the warm and wet side. And the voices are good with nice tone and weight.
Detail is better then I expected. I heard the design of the headphone would inhibit the detail in some way. From my experience it doesn't. It gives you all the detail you need to hear. Just don't expect it to go out of it's way Like the SA5000. For a 200.00 headphone their detail is on par with similarly priced headphones.
The sound stage is the F1's bread and butter. It's full and expansive. Has a good stereo like imaging and a natural presentation. Holographic and 3 dimensional. But the sound stage varies. It doesn't give you the overall spacious feeling of the 701's nor the depth from behind and front.. But the F1's trump the 701's when it comes to left and right extension, depth, and width.. And clearly better then any headphone I tried or owned. Minus the K1000. And directional audio is excellent with in a certain range in the sound field. Anything near the left and right gets picked up instantly and accurately. With front and back it's harder to tell. But is still good, not just as apparent. In a nut shell, their sound stage is vast, inviting, warm and accurate, with varying degrees of success.