Currently I have a Yamaha RX-V1073 which is connected to 5.1 surround made up of 2 x B&W 683 S2, HTM62 Centre speaker, 2 x 686 S2 and a BK 400 Sub. My PS4 is connected via HDMI to the AV receiver and soon I intend picking up a NvidiaShield too. The HDMI out of the Receiver is connected to my TV. This setup has served me well over the years, however I'm looking at upgrading to a 4k OLED TV and I'm thinking of upgrading my AV Receiver. Budget wise I'd like to spend around £650 on a unit with 4k passthrough and that is slightly more powerful than my current unit. Specs below: For my usage I mainly use my system for streaming FLAC from my NAS, watching movies and gaming. An AV Receiver with an app would be nice, but it's certainly not a necessity.