I just purchased a pair of Bose QC20. Advertised as noise-canceling headphones, they are actually earbuds. I usually use them with my iPhone. My question is: is it harmful to the earbuds if I use them ...
I have an early 2009 17" MacBook Pro. I was very impressed with it until deciding to connect my earphones. I can hear a continual background hiss that 'clicks' in when audio starts and then clicks off ...