Niles RFS-1 controlled RF switcher

Niles Audio APC-1 Current/Voltage Controlled Switcher

Niles Audio HDS-6 High Power Multi Speaker Selection Switcher System

Adcom GFS-6 Speaker Selector Switch Box 6 Pair Stereo Speaker Switcher

Niles DPS-1 Amplifier / Speaker Selector A/B Switch

Niles SS-4 Speaker Selection System 4-Way Selector Switcher

A/B A B A+B Stereo Speaker Selector Switch Switcher Combiner 2 Way Black Box

Niles SPK-1 Speaker Level A-B Switcher