Atlas Sound E408-100 100W Volume Control Stainless SteelOverview Specifications Precision, Plate Mounted 100W Attenuator, 1. 5dB Steps Specially 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.) General Information Manufacturer Atlas Sound LP. Manufacturer