Multizone Controller Amplifier Provides 6 40W Zones Of Distributed Audio From Any Of Six Sources. Addition Of Up To Five Additional Controllers Allow For Scalability To 36 Zones Internal AM/FM Tuner With RDS (Radio Data System) Display Multizone controller amplifier provides 6 40w zones of distributed audio from any of six sources Addition of up to five additional controllers allow for scalability to 36 zones Internal am/fm tuner with rds (radio data system) display Mint condition. $850 OBO Great replacement for a failed controller or to expand your current system.