I replaced my old 2010 11" with a new 2012 11" just to find that the sound now was extremely flat and much worse than my old 11". So bad, in fact, that I had to replace it with a 13" MacBook Air. The store's in sweden don't take back the computers if the box has been opened so I had to sell the new 11" at a loss and I then bought the 256Gb 13" model. However, it do sound much better than both the 11" BUT it does not sound as good as an identical 2012 MacBook Air 128Gb from USA with english keyboard. I do not think the swedish keyboard makes the sound worse, both the left and right speakers on their own seems weaker than the other computer. Tried everything from reseting pram, smc and reinstalling lion. Cloned lion from the other computer and ran it over usb to get the exact same setup and the sound volume is still very different. The sound is more dynamic and a bit higher on the 128Gb from usa than my swedish 256gb. The volume is about the same if i put the 128gb on two steps from full volume and the other one on full volume. Another intersting fact is that sound is nuch much worse in the latest Mountain lion beta. There, the sound sounds like it is transmitted over a phone call. Probably a bug in the beta software but I want you guys to listen for this also. I called Apple and they asked me to go to the shop where I bought it. I sent an email to the store and the only option according to the is to let the service guys listen to it and if it sounds too bad they can repair it. No exchange or anything. Another difference between the two computers is that mine has a yellowish screen and the other one has more of a blueish screen. Not a big issue but I think it is sad that the lcd lottery is still a problem. Perhaps it is the same with the speakers, several manufactures? Havent had the time to look wich screen models they have yet in case anyone wonders but can look at it later. If I didn't have two mba 13" 2012 I would never understand that the aound was worse but I felt that the sound was a bit thinner and then I compared them exactly.