OSD 100W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC100

I decided to replace my previous knob volume control (based on impedance matching) after one of the amplifier's channel of my Onkyo Receiver didn't work anymore, and I suspect that the culprit was the inductive coupling. So I decide to replace it by this resistive type, and this one, works perfect. One of the features I like is that has full volume at one end (direct connection, no resistors), meanwhile on the other end, the last step is disconnected (fully isolation of speakers), for great control. It comes with three different colors of covers and knobs to match your taste. It was easy to install, replacement was straightforward. Inputs/outputs on the device are well labeled and the screw connectors make it fast work, connectors also can be detached from the knob control, for easier cable hookup. Product seems of excellent quality. Overall, Recommended.Review made by Handyman

Purchased twice!Very simple to install ! Work perfect!

Used it with my KLIPSCH outdoor patio speakers, worked AWESOME...

This volume control matched our switches very nicely in both color and appearance overall. I find that the slider matches the decora style switches better than a knob style control. The fit in the single switch sized box was snug and took some tinkering. But, once in, it looks great and functions very nicely. My only criticism is that the volume adjustment is only moderately smooth. The volume adjustment is not perfectly linear as you adjust up or down. That said, this is not a big issue in my application as I generally control volume via an iOS device.As we will be expanding to a second zone of outdoor speakers, the impedance matching is big selling feature and, while not presently in use, it will be very nice not to have to remove/replace this control when installing the second zone.For our application, it works fine and looks very sleek. If adjusting volume via the control is your primary method, I would add that the slider feels a little cheap in terms of construction and, as noted above, it is not super precise. It'll work and look great though.

I'm running Klipsch LaScala speakers along with Heresy speakers. If you know these speakers you realize the volume from the LaScalas will be substantially greater. So I used this volume control to help equalize the sound. Much less expensive than getting another amp! I was concerned about distortion and any sound degradation, but to my surprise there was none.

Well made. Good quality. Instructions could be better WRT Impedance matching switch.

Works very well.

I replaced an old impedance matching volume control (transformer-based) with this resistor based unit as I did not need impedance matching for my installation. In terms of overall sound quality, I would give the unit 5 stars. The sound difference between the old transformer-based control and this resistor-based control is night and day. My outdoor high quality speakers went from sounding like a clock radio to the sound I expected. That said, in terms of build quality and quality control, I would give 1 star (hence my average of 3 stars). The unit was easy enough to connect since I was replacing another volume control. I carefully moved the connections, but only one channel worked. By gently tapping the unit, the second channel came alive. I thought perhaps I had not made a good connection when re-wiring, so I checked and re-connected. Same problem. I did it a third time. Same problem. Upon close inspection, I found that one of the resistors had a cold/incomplete solder joint at the circuit board, causing an intermittent connection and hence the intermittent dropping out. I am no stranger to the soldering iron so, rather than returning the unit, I soldered and fixed the poorly soldered connection. The second channel came alive and the unit now operates as it should. I am surprised that a unit sold as an "audiophile quality" piece would have been shipped with this problem. A quality control check would have surely identified the problem. All in all I like the unit and would buy again, but I do think the quality of the build is suspect. I hope it holds up over time because it sounds great.