Sony STRDH550 5.2 Channel 4K AV Receiver

and it comes with antennas and a microphone for the setup some registry cards reference guide start up guide the remote some batteries here's the back of the unit it's got two optical inputs 5.1 with dual subwoofers and this is the Sony ST RDH 550 and here's a size comparison this is my old Sony receiver that died it's 18 years old this weighs 24 pounds this is a sherwood AR 607 it weighs 17 pounds and the new sony is a little bit taller but it's shorter in depth and this weighs 16 pounds you put this little microphone where you're sitting and you plug it in to the mic jack and when you set it up it goes through all the speakers and adjust the volume and for the most part it's setup everything correctly I did adjust the center speaker a little bit lower subwoofer a little higher because my two left and right speakers are massive and they put up the thump and definitely go onto the Sony