Pyle 4 Channel Speaker Selector (Open Box)

I have the PSLSW4 4-zone speaker controller but they also make a 6-zone controller. I have this mounted on my covered patio and it is fed from a Bluesound Node audio streamer and a Fosi Audio TB10D amplifier. My Fosi amplifier puts out about 100watts a channel at 8ohms with the upgraded power supply. The Pyle speaker selector will accommodate 2 separate input devices. A or B so you could have different sounds playing in different zones. I am only using zone A. The preferred zone is selected with a switch adjacent to each volume control. It is either A or B but to turn off individual zones to be OFF, you must rotate the volume knob to OFF. The volume knob click into each volume level - it is not a smooth rotating dial but it works fine. There is no crackle or pop when moving the volume control knob. the back of the unit has plenty of room to connect the speaker wire either directly or using a banana plug. There is no balance control for right to left channel adjustments. I am feeding 2 sets of patio speakers and 2 sets of rock speakers out in the yard and all are fed with 14awg wire. All my speakers are 8ohms. My speakers sound fine and they get loud enough for adequate sound. This is an outdoor background sound system and it won't sound like a rock concert in your backyard. Make sure your amplifier is stable down to 2ohms if you will be playing all 4 speakers simultaneously. If only one speaker is ON it will see an 8ohm load on your amplifier. If any 2 speakers are ON, your amplifier will see a 4ohm load. If any 3 speakers are ON your amplifier will see a 3.1ohm load. The Fosi class D amplifier I am using is rated from 2 to 8ohms. This switch can handle up to 100watts RMS input with 18watts RMS output per speaker output. This switch is passive so it doesn't require any power source.