Stereo Audio Selector 3 Amplifier in 3 Speaker Out Selector Audio Spiltter. 3 Power Amplifier Switch Selection Input? Using a mechanical self locking key switch, power amplifier playback can be Select key switch Select 1 of the power players to play music. 3 Sets Of Output Key Switch? Using a mechanical self locking key switch, each output with an independent switch, 1 pair of speakers can be turned on simultaneously or turned off separately.The stereo audio selector input and output of the switcher adopt a standard red and black banana head interface, which can be used directly without power supply Output with signal no load protection function. The speaker amplifier exterior is made of all metal materials with a fine steel case, compact size. Stereo audio switcher fits any system and is compatible with all types of power amplifiers and passive speakers. Material: Metal Frequency Response: 10Hz-50KHz Channel Power: Support Peak Power Up to 300W Product Size: 240mmx105mmx55mm. Please allow slightly errors due to manual measurement and different monitors. Please pay what you win in 7 days. Because the unpaid dispute will not be closed automatically, and we may ignore it. Please verify your address during checkout. We are not responsible for any wrong or undeliverable addresses. If you really want to return, follow the instructions. People always bought together with.