Can the brightness of Quartet's Touchpads or OLED screens be adjusted? Chris April 22, 2021 01:23 Updated The brightness of the Touchpads and OLED screens are preset and cannot be adjusted. Related articles Registration - Where do I Register & Download Software for my Apogee product? Can I connect Quartet to the USB port on an Apple Thunderbolt Display? Comments 0 comments Article is closed for comments.