 The speaker came to be relied on by independent engineers , who worked in different studios and needed equipment they were familiar with as a reference point . Throughout the 1980s , engineers and producers worked widely with the speaker to monitor " [ almost ] any album you love from the 80s or 90s " – from Born in the <unk> ( Bruce Springsteen ) , Avalon ( Roxy Music ) Let 's Dance ( David Bowie ) , to Big <unk> Boom ( Hall and Oates ) . 
