wow that's actually insane, the fact that they would have an "improvement" dial is ridiculous by itself, but also the picture looks extremely fake? is this a scam website? leaves me wondering what the product actually looks like
btw it costs $9,999 according to google
edit: I couldn't help researching it, the picture looks like that because the device doesn't actually have analog needles, it has an lcd screen with analog needles rendered onto it. I guess they had to cut costs somewhere, because their customers are very budget-conscious. so probably an actual picture of the device looked unpalatable to the marketers, and they decided that the crappy photoshop would be fine.
It would be funny if the "improvement dial" measured amplifier gain in a linear scale.
Except just being bogus, what could it show that "improves" the signal? It can't lower the noise.