There really isnt one. They are the alternative :P. Can you not find any on ebay?

Granted, I only own the ad900x, but I think its safe to say, to answer your question simply: no. I have tried and own many headphones, but there seems to be something special about the open Air series that no other headphones can do. I wish there was a cheaper alternative, I would buy it in a...

The DT990 in general is much cooler than the hd6xx. Because of that, Id prefer it for classical. Yes, it carries as much detail (maybe more, who knows) as the hd6xx's.

The DT990 in general is much cooler than the hd6xx. Because of that, Id prefer it for classical. Yes, it carries as much detail (maybe more, who knows) as the hd6xx's.

Ill also say that the T5P was one of the worst headphones Ive ever heard.

Ive heard many Beyers - honestly the 880 is one of my favorites.

Ill tell you -without a doubt- that the DT990's (only open-back Beyers I own) have significantly more SUB-BASS and quite a bit less MID-BASS than the HD600's (which I also own).

I heard the pm1 and pm3 the other day, fantastic headphones. But yes, rolled off up top and definitely not open sounding.

I did too - sold mine. They do have those liquid mids going for them, but overall I did not like the headphone. It was interesting though..Would like them to release a second.

How on god's blue Earth are the 7506 and hd600 being compared.

Cool. Can you explain the process?

I actually really like the soundstage on the 600. It isn't artificially large, a good amount of air/space between instruments and fantastic imaging. Just a very natural presentation imo.

Depends what you want. The HD600 has a very similar sound signature - but does every frequency better. Also, the HD600 offers much more texture to the music. The AD900x or 1000x are not as clear, but are more euphonic. The DT 880/990 are clearer, less grainy, more sub-bass, but a more...

I havent had any issues with different cables for charging, but I have for transfering files though.

  Like a glitchy sound? If so, I've had that problem. As long as I leave about 3 gigs or so free, it works fine.