SOUND DISTRIBUTION: This speaker selector allows you to distribute an amplified audio signal to seven zones throughout the house, letting you choose between two music sources in each designated zone.
POWER: Since this ATM-7 is a passive device with no built-in impedance protection, we recommend using our impedance matching in-wall volume controls so that the load doesn't affect your amp in a negative way.
DESIGN: Multi-Zone Enable (2 In Working Mode), Zone In/Out Select, Dual Music Source A or B (2 In Mode) or output channels (7 In mode) located on the front, Master-Slave switch when connecting 2 ATM7 in parallel on the back.