I've just recently bought a pair of a50s. There were so many problems with them it would take me a while to type it all but then they just flat out wouldn't turn on. So I had to send them back for evaluation. When they finally got back to my house they still didn't freaking work I'm getting very frustrated because I've got use them a total of 1 day when I bought them last month. If anyone could help me that would be great because I'm about to get really angry.