The ASL-6A from Atlas is a high-quality impedance matching loudspeaker system that allows you to control up to six pairs of loudspeakers in multiple rooms. The front panel of the unit provides all volume controls for easy access, while A/B source selectors let you choose to control individual speakers. The ASL-6A can accommodate any combination of eight or 16 Ohm loudspeakers. This switch is build like a TANK at 8 lbs. Standard speaker input terminals allow you to connect speakers with wire capacities between 14 and 24 gauge. No ship to PR