Pros: Very detailed. Very deep and full bass. Natural and lifelike mids. Perfect and smooth treble.
Cons: Requires a good amp. (Sounds best on the HDVD 800 Sennheiser amp)
After trying the LCD-3's, SR-007 MK1 and HD-800, i find the HD-201 has better value and sound overall. But you need to pair it with the HDVD800.
Otherwise it will sound muddy and congested like the HD-600.
Use 24/192 for best results, and good produced music obviously.
The setup: PC>HDVD800>HD-201>24/192 on Foobar2000.
The HD-800 was bright and artificial, but the HD-201 was natural and has better bass (goes very low, more low than HD-800).
Now i am hearing my entire music again, after years of living with the artificial sound of the HD-800.
PD: I did not like the comfort and sound of LCD-3's and the Omega. The HD-800 was a favorite until i owned my HD-201, i will never go back.
PD2: YOU NEED TO USE IT WITH THE HDVD800. In other amps it sounds like a 15$ headphones.
Jazz, Rock, Metal, you name it, all sounded very natural and fast.
In Metal i can hear the sparkle of the guitars, the double-bass of the drums, and the vocals perfectly smooth with great separation and soundstage. I think i'm in love with these cans *-*