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Registered since

Jun 27, 2020

bose 700 on/off while plugged in minjack

While plugged in with the mini-jack, I hear "bluetooth off" (that makes sense), but I can still press the power on/off button. And that significantly affects the sound - it gets a huge boost in midrange when off 

What is being turned on/off exactly? 

Also, whatever is "on" (not bluetooth) is it consuming battery? 


-- All this with noise cancelling turned OFF.