I am looking at possibly upgrading my surround sound receiver. One of the driving forces is to have incorporated bluetooth features, but I wasn't sure whether the receivers are only capable of receiving bluetooth signal (playing music from your phone) or whether they are capable of sending signal to headphones for quiet listening. I would like to do the latter (listen on bluetooth headphones). Is this something that most receivers are capable of or is this a special feature if available at all? What should I look for to do this? Are there any suggested receivers for this purpose?