We've already looked at the impact that Apple, especially the iPod, had on the audio world over the past 50 years, ushering in portable music listening and speaker docks that eventually led to the wireless/Bluetooth speakers of today.
But when looking back at the history of hi-fi – especially as we're celebrating 50 years of What Hi-Fi? this year – it's usually the 'glory' days of hi-fi, i.e. the '70s and '80s, that we pore over, ogling vintage turntables, the first few CD players, affordable speakers and hefty stereo amplifiers.