Product descriptionDesktop type power amplifier output passive speaker volume control box, it can easily control the volume of the sound channel of the passive sound box, easy for installation, just plug it in and use it. There is a separate volume knob switch, Metal construction, brief outward and Compact Size.1. External power amplifier rear passive speakers left and right sound channel double knob independent volume adjustment control box2. Each channel supports 150 watts of processing power3.Independent control of stereo channel(Left track and right track)4.Volume control knob, Clean, smooth volume adjustment can be achieved.5. Input/outputUse screw type connector terminals6Simplefor operating,after the left and right sound channel of the amplifier is connected respectively in volume control box, the output of the left and right sound box realizes volume to adjust the volume size of the left and right sound box respectively. Product parametersPower processing: Each audio/speaker channel has a maximum of 150 wattsSupport soundtrack: Stereo left and right channelsSupport impedance: 4-16ohmSpeaker cable support: Max. 14 wire gauge14 AWGSupport interface: Input/Output, using screw type connector terminalsvolume adjustment: Left and right sound channel independent volume size adjustmentNet Weight: 0.7 kgPacked weight: 0.8kgProduct size: Length 150mm X Width 68mm X Height 55mmPackage size: Length 185mm X Width 135mm X Height 65mm Kit list1 X Passive loudspeaker volume control box