Display Enlightment by NCX

The ViewSonic scales 1280x720 (important for PS3) without issue.  The ViewSonic does not automatically detect and correctly display the default 16-235 signal consoles send out, but it does have an HDMI Black Level settings located in the Color Range sub menu in the Color Settings main menu.  I recommend using these console settings since changing the monitors settings affects all inputs and will negatively affect other inputs if one forgets to change the settings back when the display is connected to devices which send out different or incompatible signals.

PS3:

Go to Settings>Display Settings>Scroll down and select RGB Full Range (HDMI)

Go to Settings>Video Settings>Scroll down and select 1080p 24hz Output Automatic.

To use external audio devices use the 3.5mm audio in & out ports located on the back of the Crossover or use the included Playstation 3's RCA cord:

Or insert an optical cord into the optical out port located at the back of the PS3 or 4 to connect the PS3 or 4 to an external device such as a DAC.

PS4:

Go to Settings>Scroll down and select Sound and Screen>Video Output Settings>Resolution: 1080p>

RGB Range: Full

Go to Settings>Video Playback Settings and set Output at 1080p/24hz to Automatic.