This is an amp switcher/speaker switcher. (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 oxygen-free pure copper 14 AWG wire, which is enough to pass high current Power rating: 100W RMS, 200W Peak for each channel SOLUPEAK P2 is a 2-way speaker source selector box, it is designed to accept two stereo audio sources such as two amplifiers or receivers to share use of one pair of loudspeakers, just through the A/B toggle switch in front. (Note:this way is switch one pair loudspeaker A or loudspeaker B work,They don't work at the same time). This is a good idea to solve the problem of unplugging and plugging the speaker wires. NOTE: If you have tube amplifiers,please be sure to put the tube amplifiers in standby or turn off the tube amplifier. Tube amplifiers should never be run without a load.