Atlas Sound AST-6A provides for switching control of six loudspeaker pairs, and will accommodate any combination of 8 and/or 16 ohm loudspeakers. This device also features a switch for safe connection of 4 ohm loudspeakers. AST devices include separate on/off controls for each loudspeaker pair and one A-B source selector switch for overall system control. Loudspeaker volume can be adjusted using individual room volume controls. AST-6 provides for switching control of six loudspeaker pairs, and will accommodate any combination of 8 and/or 16 Ohm loudspeakers. Model AST-6 also features a switch for safe connection of 4 ohm loudspeakers. AST devices include separate on/off controls for each loudspeaker pair and one A-B source selector switch for overall system control. Loudspeaker volume can be adjusted using individual room volume controls such as the Atlas Sound DAT-8 or SAT-8 Series (not included). AST-6 has a power handling capacity of 40 watts RMS*/120 Watts audio.