About the brightness of the CRT.
Before 1997, there were a minority of models that made the whole game darker by pressing “external input” instead of “channel 2 etc”, but after the accident of “Denno Senshi Porygon” Darkening “game modes” began to increase.
As far as I remember, I think that Panasonic implemented it in all models. Also, most CRTs are installed, and SONY/aiwa was no exception.
The game button is the same terminal as VHS and DVD, and many people didn’t like it getting dark, so I think there were many people who played with a display such as “Video 1” instead of “Game”.
In fact, CRTs have a flicker that LCDs don’t have, and I think that reduced the brightness a little, but the SONY/aiwa had a flicker, but it was very bright and glaring.
Also, this is my subjective opinion or memory, but the older the model is, the brighter the cathode ray tube tends to be (unless it deteriorates due to life).
CRTs have evolved to be gentle on the eyes, and in the 2000s, “anime mode” and “cinema mode” were added, making them even darker. I hated it.
This story is about the consumer model.