A little long but humor me as I am a serious NEWBIE. 
I have been lurking on this site for a week or two. I haven't seriously been into listening to headphones for almost 15 years other than a few high-end portables and Etymotic ear buds (crappy bass but great noise isolation on an airplane) for said portables when I travel.
I am very much into fairly extreme 2-channel high-end audio and currently listen to MBL reference electronics on Focal Grande Utopia EMs so I like full range performance and solid bass extension with serious resolution. I listen to blues, jazz, rock, pop, and a little R&B.
I want to get into a pretty killer headphone rig given what I use as a an audio rig (I don't want to be disappointed). I will probably source it with the digital rig in my big system when I want to listen late night but mostly from my MacBoob/iTunes. I will probably move it around the house now and then so I don't want a boat anchor.
What has caught my eye so far are the following:
Sennheiser HD800s as they are superbly built and seem to push the envelope on the technology side of things.
Headroom "Portable Desktop Amp" $1,100: The Crossfeed circuit looks interesting, USB DAC, and I really like the idea of a battery power supply as it works great on a phono pre so why not on a headphone amp?!
Lehmann BlackCube Linear USB $1,500: I have always liked their phono preamps and I understand that this amp was one of several used during the development of the HD800.
Cary 300 SEI $5,500: Way more than I want to spend, can't move it around, and would require a DAC but I have heard this through Grado phones and it is AWESOME....love that 300B sound but don't want to pay for it.
Lastly in a totally different direction:
Stax SR-007 II/SRM-007T II $4,200: A well matched combo that is easy to move around and combines tubes with stats. Heard a lower end Stax rig years ago and loved it. I am also drawn to this Stax model as they look for more modern than the traditional models in the range.
Advice on the above or anything that I'm missing? Remember that I don't want to get too tweaky. I am also not afraid to spend money but would like to keep it to $2,500 and absolutely no more than $4,200 in the case of the Stax.
BTW, I like resolution, staging, slam, bottom end extension, liquidity on the top (I can't stand brightness), and a little tube midrange probably isn't a bad thing but I am not sure about that on phones as I have limited experience outside of the Cary.
Thanks in advance for helping me buy my "starter rig"!

I have been lurking on this site for a week or two. I haven't seriously been into listening to headphones for almost 15 years other than a few high-end portables and Etymotic ear buds (crappy bass but great noise isolation on an airplane) for said portables when I travel.
I am very much into fairly extreme 2-channel high-end audio and currently listen to MBL reference electronics on Focal Grande Utopia EMs so I like full range performance and solid bass extension with serious resolution. I listen to blues, jazz, rock, pop, and a little R&B.
I want to get into a pretty killer headphone rig given what I use as a an audio rig (I don't want to be disappointed). I will probably source it with the digital rig in my big system when I want to listen late night but mostly from my MacBoob/iTunes. I will probably move it around the house now and then so I don't want a boat anchor.
What has caught my eye so far are the following:
Sennheiser HD800s as they are superbly built and seem to push the envelope on the technology side of things.
Headroom "Portable Desktop Amp" $1,100: The Crossfeed circuit looks interesting, USB DAC, and I really like the idea of a battery power supply as it works great on a phono pre so why not on a headphone amp?!
Lehmann BlackCube Linear USB $1,500: I have always liked their phono preamps and I understand that this amp was one of several used during the development of the HD800.
Cary 300 SEI $5,500: Way more than I want to spend, can't move it around, and would require a DAC but I have heard this through Grado phones and it is AWESOME....love that 300B sound but don't want to pay for it.
Lastly in a totally different direction:
Stax SR-007 II/SRM-007T II $4,200: A well matched combo that is easy to move around and combines tubes with stats. Heard a lower end Stax rig years ago and loved it. I am also drawn to this Stax model as they look for more modern than the traditional models in the range.
Advice on the above or anything that I'm missing? Remember that I don't want to get too tweaky. I am also not afraid to spend money but would like to keep it to $2,500 and absolutely no more than $4,200 in the case of the Stax.
BTW, I like resolution, staging, slam, bottom end extension, liquidity on the top (I can't stand brightness), and a little tube midrange probably isn't a bad thing but I am not sure about that on phones as I have limited experience outside of the Cary.
Thanks in advance for helping me buy my "starter rig"!












