AtlasIED E408-100 Precision Plate Mounted 100W AttenuatorSpecially designed for attenuation in masking and sound reinforcement systems where fine tuning of level control is required. Employs a ten position, non shorting rotary switch without stop. Attenuation rate is 1. 5dB per step. (All other specifications are the same as the AT Series including the UL listing.) Features: 1. 5 dB Steps for Sound Masking and Other Precision Applications 100 Watt Power Handling Rack or Plate Mounting