I've been considering buying an RA1 amp to pair up with my beloved RS1 headphones. I'm watching one on ebay which ends on Sunday 8th but I noticed it's the battery powered version. Am I better to wait for the AC powered amp to come up, is there no difference between the two, or should I be...

Just spotted in this month's What Hifi magazine ( UK ) a head to head battle of these two high end headphones. Thought I would post to let you know the outcome and throw in some comments from the magazine for those who haven't seen it. The Grado came out on top with 5 stars ( out of 5 ) and the...