The bass compared to the Zino is richer and/or deeper. I don't find the bass "boomy" or over powering. I'm a Senn. fan, so for me that is a good thing. I'm hearing more reverb going on with the 2400 as compared with the Zino (which I assume was the musician's intention). The headphone is not coming off as as lively as the Zino, but I feel that I'm getting more of the full spectrum of music over the Zino and my B&W P5's.
I have a pretty modest set-up being limited to a Headroom Total Bithead and mostly 256 kbps music of my iMac and iPad. I don't see me lugging the 2400's around for coffee shop runs because of their size. The fact the 1/4 to 1/8 adapter won't fit my Elements Vapor encased iPhone isn't a deal killer for me.
I sent a picture of them on my head to a friend and she said it looked like I was geek wearing manhole covers or mag wheels ;) So unless you are prepared to take a little ribbing from earbud users these might have to stay home. I do have plans of trying these with my iPad with the Apple USB dongle and the Bithead.
The reason the plastic is still on the headband (in the pics) is that I pretty much had the 2400's "on probation" and until I figure out whether I wanted to keep them or not. Until I remembered to put the Total Bithead into low gain I thought the music sound a little congested on the 2400. Once I got that squared away I found the music opened up nicely, Dire Straits sounds great as I'm writing this. I suppose one gauge of quality of the headphones is that my older iTunes purchases at 128 kbps aren't really hacking it anymore. I find the 128's more listenable with the Zino's and the B&W P5's.
The cable supplied screws into the headphones and is heavy duty and long, way too long for my set-up. I'm finding the accessory iPod cable too short for my purposes (running from the Total Bithead on my desk). The comfort of the headphones is great. Long listening sessions work well until I tilt my head left and the stiff cable and cable protector (where the cable screws into the headphone) hit my shoulder. Maybe I've got a short neck, but I didn't have this problem with some AKG's I once owned.
I've never had a chance to try the higher end Ultrasone headphones. So, I don't know how musically compromised these are compared to the higher end and more expensive Ultrasone offerings. But I can say for me they are a definite step up from the Zino's. I would imagine the 2400's have a lot more to give if I would upgrade my headphone amplifier and go to lossless. Am I going to keep these? Stay tuned until Monday as I'm still checking them out over the weekend.


