Sony STR Dh550

Audio Power: 90 watts RMS per channel (20-20k Hz, 0.09% THD) into 8 ohms, or up to 145W per channel at 6 ohms. 4K Support: Supports 4K/60p (4:2:0) video signals, allowing it to pass 4K video to a display. Note: It is not HDCP 2.2-compliant. Connectivity: Features 4 HDMI inputs, 1 HDMI output (with ARC/BRAVIA Sync), 2 optical, 1 coaxial, and front-panel USB for smartphone/walkman. Audio Formats: Supports Dolby TrueHD, Dolby Digital Plus, and DTS-HD Master Audio.with usb