Blue, yellow and white here. I always thought they used different colors for different models, chiefly the A/B models vs. the class A models.
Luxman 509x white vs blue meters
Anyone know why there are units with white meters and others with blue? I read somewhere that 509x has white, lower AB models blue, and class A amber. Mine are white as well, but then I watched a YouTube video from a US-based channel with a blue meter 509x. So I guessed that they were initially made with blue and later switched over to white. But looking at past ads I see both blue and white going back to 2019. So what gives?
Honestly I would love one with blue meters. Not only do I think it looks better but white is pretty bright! With the lights in the room off they are almost like flashlights.