A great solution for applications with multiple audio zones, with the ability to easily control the volume level in each zone. With an option for a rotary knob (VCRV100), or a slider (VCSV100), the Beale Street Audio 70/100v volume controls are a perfect pairing to any 70/100v audio system, allowing for adjustment for any commercial audio setting. Simple, reliable, flexible. Turn up the fun with the VCRV100 and VCSV100 70V Volume Controls by Beale Street Audio.