My first reaction to these mounts is "Why are they so expensive?". After finding limited other ways to mount the Sonos One upside down like they should be for anything higher on the wall, I decided to try them. The reason for their high cost is pretty obvious. These are the most high tech speaker mounts I have ever seen. extremely durable (one of the Sonos is HEAVY, so that's important), reversible, and look like they're part of the speaker itself. The only complaint is that there's no set screw to turn them from side to side. I don't know why the speaker can move by itself,
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