>This is an amp switcher/speaker switcher. You can choose 2-IN-1-OUT for 2 amplifiers to 1 pair of speakers, or in reversible direction of 1-IN-2-OUT for 1 amplifier to 2 pairs of speakers(Note:this way is switch one pair loudspeaker A or loudspeaker B work,They don't work at the same time). So you could compare 2 amps or 2 pairs of speakers quickly and conveniently | >You can easily with just one press of for A/B switch. This is a passive non-powered device. Plug and play | >In/Out through the high quality golden plated banana jacks, which can accept up to 12 gauge wires | >The internal connection wire uses UL1015 14 AWG wire, which is enough to pass high current | >Power rating: 100W RMS, 200W Peak for each channel

RCA switcher 3 input 1 output or 1 IN 3 OUT reversible,(NOTE:“1 IN 3 OUT” is not 3 sets of output at the same time ) | Suitable for multiple sources signal select or large area or multi-room paralleled amplifier or active speaker distribution of the same signal playback | High quality golden plated RCA terminal/ Solid knob and aluminum box | Use specialized audio rotary switch/Lossless device, easily switch between different audio in or out | Passive device,no need power supply