The ADV4004 & ADV4006 are low-profile speaker distribution systems with individual on/off selectors for each listening zone. The ADV4004 distributes a stereo speaker-level signal to 4 stereo listening zones. The ADV4006 distributes a stereo speaker-level signal to 6 stereo listening zones. Both speaker selectors feature a manuallyactivated power protection circuit switch, located on the rear panel, that maintains a stable 5-ohm impedance load to ensure amplifier stability. Pass through speaker output terminals allow easy connection possibilities.