Grey-equalized noise at 3.4, slightly brighter than Focus Zone, steady level
Preview plays right here. The generator adds a sleep timer, full controls, and WAV export.
Deep Work sounds like a heavy rain shower heard through double glazing, evenly spread across the spectrum thanks to the grey equalization. It is a hair lighter than Focus Zone, with a touch more upper texture, and that small difference is what makes some people prefer one over the other for hours-long sessions.
The color is 3.4, forty percent of the way from pink toward brown, with grey EQ on. The pulse is off and there is no envelope loop, so once the three-second fade completes the level is fixed. Gaussian distribution keeps the texture smooth, and nothing else is applied, so the small color difference from Focus Zone is the whole story.
People tend to settle on Deep Work when they want slightly more presence than Focus Zone without stepping all the way to the brighter Concentration. If you find yourself turning Focus Zone up to cover voices, try this at the same volume first. Both keep the same grey EQ, so the change is purely in the color slider.