The display is LCD.the OLED was just an example for a graphic display. The same could have been said for fluorescent displays that have been used for years in hifi gears but still working. Also, there are plenty of other options (e.g. LCD) that could have offered a much nicer UI and navigation.
cheers, Ale.
I didn't like the blue light, so years ago I asked Lee Taylor if it was possible to disconnect the blue backlight and possibly put an orange one, to go with my (then) tube power amps. He said No! the blue light is incorporated within the display.
It would have been nice to go orange.
But even with my failing eyes, I could still tell what input it was on, and see the volume bar across the room.
BTW, that switched resistor ladder volume control was not steppy at all, volume changed very smoothly, up or down, with no clicks, ticks or abrupt steps.
You would think it was a 1db digital volume control.