Crown's 135MA is a high value mixer-amplifier for commercial audio. 3 inputs each with a volume control, and one 35 watt amplifier output channel in 135MA. Ideal for paging, background music, and music on hold. Priority muting by VOX or external switch. Bass and treble controls on master output. Three Year, No-Fault, Fully Transferable Warranty completely protects your investment and guarantees its specifications.