61051 2 or 4 Way Speaker Switch, 1 in 2 Out or 1 in 4 Out Way Pair Stereo Speaker Selector W/Screw Type Connections Metal Non-Slip Box - Black (1 x 4 Way)

Installed in a bar to control speakers in various areas. Standard block connectors for easy installation. Did not affect the sound quality at this level but be aware that the volume in areas changes as the impedance of the load on the amplifier changes when connecting different sets of speakers. If not connecting matched pairs try to spread the load across both channels on stereo amp. i.e. don’t put additional mono speakers only on the left channel but put some on the right channel too. Metal case and chunky rocker switches seem good quality.

Kills volume tremendously.

The unit works very well for what I need it for

It cleared up the problem with 4 sets of speakers, both indoor and outdoor.

The Xtrempro 61051 was exactly what I needed. I have a pair of speakers run outside and wanted to spit the sound to go to a second set of speakers. This can go badly without the right electronics and power matching. The Xtrempro did this perfectly. After ensuring that I put a plastic cover over it to keep it out of the rain, (under our deck in addition) I can say that this is exactly what I needed at a good price.

Great product