2-in 4-out Power Amplifier Speaker Switcher Splitter Comparator 300W Per Channel Without Loss Of Sound Quality Features: The output of 4 groups of speakers can be divided into 4 zone switch control, each group of speakers can independently select A and B power amplifier output, and each group of speaker output can independently turn on and off the function. Do you have 2 power amplifiers and 4 sets of speakers that need to be connected to each other? Do you need 2 amplifiers and 4 sets of speakers to get stuck? A powerful amplifier and audio switcher can solve these problems, 1. 2 power amplifiers push-button select switch input,4 sets of stereo speakers push-button select switch output (4 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 switch 3. The maximum power of each channel is 300W 4. Signal input provides vacuum tube power amplifier signal no-load protection function 5. Manual selection of input and output switching, straight plug straight use, switching signal stability, between channels will not produce another dry close or noise 6. Compact design of solid metal shell, easy installation, the product does not need external power 7. Simple installation: input and output plug and play easy installation, you can enjoy different audio experience Product Parameter: 1. Compatible with all types of power amplifiers and speakers 2. Inputoutput accepts heavy-duty speaker wire or speaker pin wire through the terminal port 3. Connect the power amplifier to amplifier A and B 4. Connect the loudspeaker to position 1-2-3-4 respectively 5. Turn on your power amplifier stereo device and the product requires no external power supply 6. Input: 2 sets of inputs (banana plug) 7. Output: 4 sets of output (banana plug) 8. Power: up to 300W 9. Metal material, fine steel housing, compact size suitable for any system 10. Channel Power: E