I just ordered the Grado SR-60 headphones from nax.com They were only $67 shipped, so I pounced on them. I did a little research before I bought, and these and the SR-80 headphones seemed to have the most "bang for the buck". I decided on the smaller ones mainly because of the price. I do have some questions though. I've seen varied thoughts about these "cans" all over the net, but I trust you guys the most. 1) Have you noticed any improvement by using a dedicated headphone amp? I never intend to play these loud, I just want clean music. If yes what amp? 2) What portables do YOU drive these with? I've heard that older portable cd players sound better since anti-skip and battery conservation hurt the output of newer players. 3) Any experience using these with your HT receiver? I have a Sony STR-DA2ES, and I know nothing about the headphone out on it. 4) Ear pads. Most call the stock ones uncomfortable. Are they unbearable? Where do you find replacement foam? Thanks.