OSD 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300

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

Easy installation. The wire terminals are removable and are the exact same as my previous volume controls. which made the swap quick by simply unplugging the input and output terminals and plugging them into the new speaker volume control. They also have an adjustable impedance selection, make sure you set this up correctly for your driver amp before install the switch plate. The switch comes with a really good install instruction sheet as well.

Straightforward installation and worked as expected. The three different color faceplates/knobs was a nice touch.

Works well. Inputs/outputs little bigger than other models I have used making it a bit easier to wire. Also came with 2 other different knob and cover plate color options which is nice

Excellent quality at a good price. Used two for a large outdoor sound system

What I liked1. It came with different color face plates - wasn't a separate purchase2. The input and output wiring blocks were different colors - great aide to preventing miswire the volume control.3. it works!What I didn't like1. the wiring blocks once installed put the wires in towards the center of the volume control pressed up against the transformer creating a 90 degree angle to get the wires to clear the cut in mud ring. This puts strain on the wires to the wiring block, as well as strain on the wiring block to the mounting pins.2. the exposed circuit board. this is potentially a serious issue if your installing in a commercial environment that have metal mud rings. Definitely not coolWhat I'm on the fence aboutThe quality of the electronics is good, the nob and potentiometer doesn't feel like quality. But then again these aren't Niles or Russound and come in a 1/4 of the price. You get what you pay for.

I need two volume controls in an emergency we had an event and these were available and were delivered the next day. Installed and the ceremony and music went great.

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.