Check the listing for details. 300W Outdoor Knob Volume Control w/ Impedance Switch - Weatherproof, OVC300 Grey. Color: Gray, Condition: New. Listed at 39.99 USD. Unique easy-access impedance matching jumper setting without open the weatherproof seal box. If you enjoy an outdoor audio system, you'll love the convenience of outdoor volume controls! Now you can stop dragging the remote control outside where it is sure to get lost, or avoid having to get up and go to your audio source to turn the volume up or down. This pure resonance volume control offers 300 Watts of optimized sound quality with minimal bass roll-off. Control 1-8 pairs of speakers simultaneously with impedance matching. The autoformer design features outstanding sound quality due to high permeability steel utilization in the volume control core. Comes in a Grey or white faceplate. In addition, the OVC-300 includes an easy access impedance switch that lets you set the impedance without opening the box. Specifications: Volume Control Type: Outdoor 300W Impedance Matching Knob StylePower Handling: 300W Peak; 150W RMS Per ChannelFrequency Response: 20Hz - 20kHzTotal Attenuation: -54 dB (Max)Steps: 12 (Make Before Break)Impedance Matching for 1/2, 4, 6, or 8 Pairs of SpeakersEasy-Access Impedance-Matching SwitchWiring Requirement: Up to 14 Gauge WireWeather-Resistant for Outdoor UseCan Withstand -50F / +130F Degree WeatherMounting Options: Use 3/4" PVC Conduit Pipe to Stand Alone or Mount to the WallUnit Dimensions: (L x H x D) 3.25" x 4.37" x 3"Colors Available: Grey or White