Wikipedia
Varizone
Varizone is a fully digital public address system technology developed and produced and by Klotz Digital.
Other than traditional analogue public address systems Varizone has next to the analogue 70/ 100 volt speaker system solution also a fully digital solution that transmits the audio digitally to the speaker, where it is amplified by small, distributed programmable amplifier modules.
This allows to combine Voice Evacuation System features with digital Public address, Intercom, and Background music functionality by adjusting the volume for each speaker individually depending on the application.