Thanks for the report back on the mainline -> lcd2 pairing Loquah! Since I hear the lcd 2's as basically a side grade from hd650's (notwithstanding the cost difference), it makes perfect sense to me that you would ultimately prefer you T1's. Before settling on my hd800's, I spent a couple hours auditioning lcd 2's in a quiet room with a bunch of my favorite test CD's. My final conclusion was that audeze's "shelved down" trebles (at least on the lcd 2 v1) translated into an overly polite presentation of well recorded acoustic treble instruments (e.g. violins, trumpets, pipe organ, etc.) that just wasn't quite what I was looking for. hd800's also clearly trounced them in sound stage. Obviously, the lcd's are great headphones from a big picture standpoint, and I am nitpicking relative to my subjective preferences, but as someone who was heavily involved in semi-pro choral music from a young age, and also played in a brass section for many years, these are things that tend to stand out to me. You certainly have to respect their bass presentation though!
Don't suppose you've had a chance to listen to your mainline with hd800's yet? They are basically a perfect match to my ears, but I have yet to hear T1's. A face off is no doubt in order!
I snapped the below pic this morning to update my avatar and figured I'd share the full res version. The mainline really is a great looking amp even in stock form. I may or may not end up staining the wood frame, but am still too busy enjoying the music at present.