Review on 🔊 Theater Solutions TSVCD: Premium White Wall Mount Speaker Dial Volume Control Switch with Impedance Matching by John Miranda

I bought 8 of these as part of a whole house system and then moved on to higher priority projects. These switches sat in the box for a year before I had time to devote them to installing the system. 6 out of 8 works exactly as advertised. 2 of them had dead channel each after installation. I don't know if they were DOA or died during storage. They were stored in my office so there were no extremes of temperature or humidity. I replaced two broken ones with new ones that worked great so 8 out of 10 worked for me. The switches are very deep. It's not possible to install two switches on opposite sides of the same wall like I'd like, but that probably doesn't bother most people. The impedance jumpers are easy to change, and the grid in the documentation is easy to understand once you do a little research and know the impedance rating of your amp and speakers. That they come with 3 different colored plates and handles is nice. I used 14 gauge speaker wire and that is the absolute max the connectors can handle. On many of these I struggled to twist the wire tight enough to fit, but managed. I am very impressed with the sound quality. No distortion -2 stars for 20% error. I would buy them again but will check when they become available.