From the latter half of this thread. It’s not necessarily an issue, only an observation.
There is a difference between Fett’s builder #define BOOT_VOLUME (10 is the minimum in the builder scale) and lowest OS7 volume. Not that they NEED to match. I get that it’s an an arbitrary scale. It’s nice to have a super low volume for playing around though. At least on boot with that #define, it’s quite stealthy. Subsequent ignitions are still low, just not whisper quiet. As Fett explained in the other thread, fancy math stuff happening.