Lowell 100LVC-DW | 100 Watt 25/70 Volt Volume Control Attenuator (Decora White) Power Rating: 100W Attenuation: 3dB per step (33dB total) Volume Positions: 0-10 Use With: 25/70/100V speaker line Fits standard E.O. box (2.125 in. min. depth)