Summary: I owned Sennheiser HD580 for years, this year decided to upgrade and listened to HD600, HD650, Grado RS2 and Grado RS1. As result purchased Grado RS1 as it had best sound, clarity, details, sound stage, instrument seperation and realism of music you are listing to. I did not find Grado RS1 particularly uncomfortable and several hours of listing do not tire me at all. If you can afford Grado Rs1 definitely try them.
Summary: I thought I had heard the best headphones when I recieved my Sennheiser HD650. (I listen trough a Musical Fidelity X-CAN V3 headphone amp and an average Denon cd player). But then I received these Grado RS-1 headphones. I noticed that it has better detail and better bass. If you want the best headphones, purchase these.
Summary: It is probably the best headphone ever developed. It cost 1/5 the price of a Stax Omega 7 and can stand toe to toe with it all day long in sound quality. The first time I put on a set of Stax Omega 7, I thought mankind had finally achieved the epitome in headphone development. But sure enough, a small company out of Brooklyn New York by the name of Grado’s Lab proved the world wrong.
Summary: Note the price is UK £375. OK at last I have the RS1's I read all the reviews first about how these headphones compare to the HD600. I am an amateur piano player and the rest of the flamily play instruments (intermediate or good) bass player cousin who has played with Ronny Jordan and co, drummer who has played with Pato banton (remember with UB40 rat in my kichen lol), my wife plays violin, kids play, etc so I have a musical ear hehe.
Summary: these headphone are masterpiece. I drive them with Wheatfield audio ha-1 ( all tube upgraded) and meridian 508.24 cd player. ( transparent cabling and power cond.) This setting is impressive. I'd have to say it bring out about 70% of my reference system consit of wilson audio maxx/ goldmund 29m with accuphase digital. very nice value for the price.
Summary: I got these cans used from a fellow member at http://www.head-fi.org for $430 dollars. The right Mahogany ear cup suddenly developed a hairline fracture and I sent them back to Grado Labs in Brooklyn, NY for repair; it cost me $75 dollars which totals $505 dollars. These cans are worth every penny I paid for them. They are the best headphones I have ever heard in my entire life! I have never heard music to be so alive and rich in my entire life!
Summary: I was able to compare Senns 600 vs RS-1 side-by-side on a great deal of my CD collection using the Cary 300SEI amp headphone output driven by a Cary 303-100 CD player. Ultimately sent the Senns back. I am an amateur musician in the real sense of the word, now only singing in choral groups, but with an instrumental background. The Senns 600 are great. They put you mid-way back in a concert hall and you hear wonderful detail.