I own an HD800 and soon will have my own LCD-2 but from my extensive listening of both at home and at Canjam I wouldn't go so far as to saying that the LCD-2 blows everything out of the water...it doesn't. I find it better than the HD800 in certain aspects such as tonality, detail retrieval, and just how realistic/convincing everything sounded on those headphones. However, to me the HD800 really has a wonderful soundstage with great instrument separation, wonderful bass, and beautiful highs when properly amped. At Canjam I tried the HD800 on the Luxman P1-U, Apex Peak/Volcano, and Apex Pinnacle and here are some of my impressions that I'll rehash from somewhere else:
I mainly focused on the HD800 since I'm very familiar with them and compared the headphones on the Luxman P1-U, Apex Peak+Volcano, Apex Pinacle ($10k amp). The was listening to Dire Straits 'On Every Street' CD which isn't that great of a CD but I was very familiar with it. I have a pair hooked up to a Woo 5 amp and I know how extremely finicky these headphones are and difficult to get to sound right. All mu
First of all, I wasn't a big fan of the Luxman P1-U and don't really understand why people keep raving about this amp with HD800s. To me added even more sterility to the HD800s and was overly bright to my ears (even with the HD800s being re cabled). Lows weren't anywhere near their potential on this amp and neither was there enough impact of notes to my ears.
Next up was the Apex Peak + Volcano (Hybrid tube amp) which will go for about $2k. The designer of the amp actually said he had never compared the standard wallwart vs. Volcano power supply which I find a little suspect but whatever, it should 'technically' be better
The amp isn't extremely attractive and doesn't have any balanced outputs, but boy did they make the HD800s sing! The sound was very effortless and transparent, providing a great window into the music. Bass was extremely satisfying and right away I started bobbing my head with sheer enjoyment of the music. The mids felt more prominent and satisfying than on the P1-U and the highs were way more tamed. Overall, a great amp pairing for HD800s.
Next up, the Appex Pinnacle (307A Tube amp), which was hooked to the same source as the Peak/Volcano and running HD800s balanced. In terms of build, once again not the nicest designed chassis but it felt very solid and well built. To me though it looked more like a $6k amp in the ranks of the Balancing Act or Woo 5 than something twice the price. In terms of sound, I was very familiar with the sonic signature of this amp since it was similar to the Peak next to it. I could tell they were built by the same designer and they the same effortlessness to the sound. To me the more expensive amp increased the detail level of the music and felt a little airier / more transparent sounding. Bass was a little bit tighter and mids sounded pretty similar to the Peak. It truly was a wonderful amp that could make the HD800s sing.
Moral of the story is that the HD800 on the Apex Pinnacle was probably the best sounding rig I heard at Canjam with the Apex Peak not too far off! When you have good synergy with the amp/source, these headphones really excel and have it all to my ears!!