I have a Dolby Digital 5.1 surround sound and the receiver is getting old and breaking down.

I found a replacement ( http://www.amazon.com/gp/product/B0.....=ATVPDKIKX0DER )and its an all HD Receiver outputting Dolby TrueHD/ DTS-HD audio.

Will my current speakers be compatible (meaning I get full HD audio) to this receiver?