Complex sentence: Onix Audio started assembly above a shoe shop in Brighton England in 1984, just 2 years after a very small number of units had been sold to UK dealers that were made in Tony Brady's bedroom after initial design.
Split into simpler sentences: Onix Audio started assembly above a shoe shop in Brighton England in 1984, just 2 years after a very small number of units had been sold to UK dealers. These units had made in Tony Brady's bedroom after initial design.