4 In 2 Out Speaker Selector Switch Switcher Power Amplifier Receiver Splitter Box speaker switch selector boxFeatures:brand new and 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 closed independently).Sets of stereo speakers can sound at the same time, you can also turn off group of speakers more groups of speakers individually, manually select the pushbutton switch.The power of each channel is 300W input provides vacuum tube power amplifier no-load protection function.Manual selection of input and output switching, straight plug straight use, switching stability, between channels will not produce another dry close noise.Compact design of solid metal shell, easy installation, the product does not need external power.Simple installation: input and output plug and play easy installation, you can enjoy different experience.Specifications:Compatible with all types of power amplifiers and speakersInput/output accepts heavy-duty speaker wire speaker pin wire through the 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-50KHzProduct size: approx. 240x105x55mm/9.45x4.13x2.17inPackage Includes:1Set x Amplifier Speaker Selector SwitchNote:Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the differe