product presentationDo you have 4 power amplifiers and 2 sets of speakers that need to be connected to each other?Do you need four amplifiers and two sets of speakers to get stuck?A powerful amplifier and audio switcher can solve these problems,1:4 power amplifiers push-button select switch input,2 sets of stereo speakers push-button select switch output (2 sets of speakers can be opened or closed independently)2: sets of stereo speakers can sound at the same time, you can also turn off one group of speakers or more groups of speakers individually, manually select the pushbutton switch3: The maximum power of each channel is 300W4: Signal input provides vacuum tube power amplifier signal no-load protection function5: manual selection of input and output switching, straight plug straight use, switching signal stability, between channels will not produce another dry close or noise6: Compact design of solid metal shell, easy installation, the product does not need external power7: simple installation: input and output plug and play easy installation, you can enjoy different audio experience Product ParameterCompatible with all types of power amplifiers and speakersInput/output accepts heavy-duty speaker wire or speaker pin wire through the terminal portConnect the power amplifier to amplifier 1-2-3-4Connect the loudspeaker to position A and B respectivelyTurn on your power amplifier stereo device and the product requires no external power supplyInput:4 sets of inputs (banana plug)Output:2 sets of output (banana plug)Power: up to 300WMetal material, fine steel housing, compact size suitable for any systemChannel Power: Each channel supports up to 300W of powerFrequency response: 10Hz-50KHzNet weight :0.93 kgPacked weight :1.09 kgProduct size: length 240mm X width 105mm X height 55mmPacking size: length260mm X width 185mm X height 65mm Kit list1 X4 input 2 output power amplifier and sound switcher loudspeaker switch distributor