I've slowly been upgrading the audio around my home starting with an Klipsch RF-82 II / Emotiva home theater setup. Then some Monitor Audio RX1 (still trying to pick an dac/amp) for the bedroom for music. Now I'm getting to where I'd like to give my office headphone setup a nice big upgrade as well. My headphone gear I've probably had the longest and it's definitely not sounding as good compared to all my other nicer gear. I also probably use my work headphones more then anything else so... I really should get something nice.
Right now I have an old Total Bithead dac/amp and some HD280 Pro's. Since this is my day-job work environment I need headphones that don't leak too much sound so I don't aggravate my co-workers. So, closed headphones is the main requirement. I mostly listen to jazz / vocal and dubstep/electronic music but I also occasionally play some classic/modern rock or classical. I never listen to Country or Rap and very rarely listen to anything "Pop".
At this point I'm not sure if I should spring for headphones or a dac/amp first. Which one would would give me the biggest upgrade? Probably headphones :). So I've been reading about the Fostex 900's but I'm not sure what else is out there that I should be seriously considering as well.
A side note. I'm on the fence on rather I should get a Tube amp/dac like, say a Woo WA7 or a solid-state amp/dac like the Yulong DA8. I would like a USB DAC that can play all the great hidef formats I can download (16/44.1 to 32/384). I believe the Woo doesn't play them all and I'm not sure if that's a deal breaker for me or not yet becuase I am -very- curious about tube amps but maybe a tube amp is what I'll decide on for my bedroom setup. Rather I can hear the difference of a 96khz 24bit track and some crazy 384khz 32bit DSD file is another topic - but I'd still like to be able to play those formats. I'll never get to decide if I like one more then another if I can't actually play them properly without my computer down sampling them.
So, again.. I'm looking for top of the line closed headphones that are great for great jazz / vocal and dubstep/electronic music. Then considerations on tube vs solid-state amp/dac selections that are well suited to the recommended headphones.
Thank you :)