Pros: Great bass extension; incredible transparency; very musical
Cons: Price - need I say more?
When $$$ is no consideration - these cans need to be at the top of your list. I have been an avid Sennheiser listener for years. Most recently with the HD600. My amps are Joseph Grado Signature (battery operated), Aspen Audio (model 823 - tube amp) and most recently The Pan Am (ALO Audio of Portland OR - also tube amp). I compared the new Sennheiser HD 800 to the Audeze LCD-3 recently and here is what I found. The HD 800 is surgical, quick and a bit bright. Musical but without the bass extension. Very clear but could cause fatigue due to its sharp edge. The LCD-3's are liquid, musical, stunning clarity, deep/powerful bass and present a full articulate soundstage. I must admit I have never heard anything quite like these cans. I am in love. I feel like I am listening to the same old stuff for the first time. Wow - they are that good. Yes they are crazy expensive - but an audiophile never considers money!!! Just sound quality. Why else would we spend thousands on power cables... My musical tastes cover the full spectrum of analog and digital - from metal to classical. Highly recommended.