Product details:

The Pss8 multi-speaker selector gives you flexible speaker-switching options for multi-room applications. It is equipped with 8 channels which allow you to connect as many as 8 pairs of speakers and play them all simultaneously or turn them on and off independently without damaging your equipment. Any combination of connected speakers can be played at any given time. Create a whole-house system so you can listen to music in every room. Its protection circuitry ensures that your amp or receiver operates smoothly. Its high current speaker terminals accept up to 14-gauge speaker wire for maximum signal transfer. This is designed to operate with a stereo receiver/amplifier that has an output of 100 watts per channel or less, and with speaker systems that have a minimum impedance of 8 ohms.Audio Power Handling: 50W (R.M.S.)/ch, 100W (Max)/ch
Frequency Response 20 Hz to 20KHz
Channel Separation: 80 dB
Crosstalk between channels: 50 dB
Speaker terminal wire size requirements: 14-22 a