in Wall Speaker Selector A/B Switch, Select from 2X Speaker Pairs White AB12

Works as promised. Easy to install. Appears to be of utmost quality.

I researched many different volume control knobs offered on Amazon and decided to give this one a go! The installation was a breeze! You will need a box extender as these units are quite deep but they’re easy to find on Amazon! When it comes to the knob itself it is very well built, there’s no pausing in the audio when adjusting the level (as others have mentioned) and you won’t be disappointed! Note: The instructions could have been a little clearer when setting the impedance matching toggle... also, I didn’t see this mentioned anywhere but the higher you set the toggle example 1/2x -> 4x -> 8x you’ll notice a drop in the volume output from your speakers however that is to be expected! Overall, I was very happy with this control knob! Like the title says I ended up purchasing another one! The second one was a little temperamental at first but that was due to some wiring that needed to be replaced and due to a more powerful amplifier! I replaced some wires and reduced the volume on the amplifier and now all is awesome with this one too!

The speaker volume control works exactly as promised. The screw terminals for attaching input and output wires increased the ease and flexibility of installation. The unit fits in a typical single gang box. I used the slider volume control in an external box to control outdoor patio speakers. The controller came with four face plates of different colors which are more than similar products from other sources.

Works great for RV exterior speakers. No more in and out to adjust volume.

Sound control is performing satisfactorily. However the instruction sheet provided with the product does not match the product...the instruction sheet included in each box provides details on how to adjust the ohms setting to the speakers to be connected, however the product does not have the features depicted to make such adjustments. Response from the manufacturer was that the wrong product must have been sent and that they should be returned, but that doesn't make sense as the problem is the instruction sheet, the product is what was ordered. To add further confusion, there is indication on the box alluding to the control being self adjusting to the proper impedance. Bottom line is these sound controls work fine and as intended with the speakers they are connected to, but installing them without being certain as to the impedance setting was taking a risk of damaging the speakers.