I would say that these echoes are probably not related to the Headphones. It's more likely that the echoes are because of a bad telephone connection especially if the call is a VoIP call. Yes the Sony Headphones are great quality for the price, unlike the iPhone or any other apple products which are just hyped up for no good reason. I have bought these Headphones and another more expensive over the ear model and am very happy with both. I have never been disappointed with any Sony Products.