Two tricks discovered by Dan at could customise the MacBook Pro to emit a startup chime, and stop it from starting up whenever you opened its case. Then came the 2016 MacBook Pros, which needed to have a setting changed before they gained a voice, and now the 2017 iMacs, which are forever mute. The rather tinny sound emitted by early models, through their small built-in speakers, had evolved into a sonorous chord, often heard through a hefty audio system. Until the launch of the MacBook Pro in the autumn of 2016, every Mac had chimed when it started up.
