OP-Z, can the LEDs intensity be reduced? September 26, 2019 13:36 no, this is not possible. Related articles OP-Z, does it sample? OP-Z, how do i hook up my unit to a monitor? OP-Z app, can i turn the HUD off? OP-Z, can I sample a line level signal via the headset jack using an adapter? OP-Z graphics, what is it and how to use it?