Yes. Connect the cable box to one HDMI input on the TV, and PS3 and the DAV-HDX275 to the switcher. Then connect the switcher to the other HDMI input on the TV. You switch inputs with the remote control. I use the Apogee HDMI 3x1 Mini Switcher and it works flawlessly. It's on sale for $20.but that switch is the thing i would need if i got it?