I have a similar but slightly less annoying gripe with the tiny JBL Go. They have start-up and shutdown chimes. It's not even very loud, if you turn the device on during the day. But what's normal during the day can be extremely loud if the whole house is asleep. I just want to listen to a little bit of music on the lowest volume, but before I can do that, it has to wake up the whole house first.

Just a tiny - beep - is fine, which they had on the first JBL Go. But in the name of progress, all subsequent models have have a loud DUM DUMMM.

JBL are assholes.

https://m.primal.net/IpEN.png 

https://www.reddit.com/r/JBL/comments/ekmgg3/how_do_i_disable_the_startupshutdown_sound_on_the/