Having a Home Cinema experience, or a private cinema, using the latest gadgets in 1920, has been replaced by radio and TV.
Home theatrical experience in 1920
The Electrophone enabled people to listen to theatrical performances, concerts and church services from the convenience of their own home. This advert includes a postcard for potential customers to cut out and send off for more information about the Electrophone. Under the heading ‘Magic of the Sick Room’ it describes how the Electrophone can even relieve ‘the tedium of illness’
Basically it was a phone line.