shinar Metal Wall Mount Compatible with Sonos Era 300 Swivels up to 360° / Tilts -70° / +70° Rotation Without Adjusting Screws Max. 12 kg (2-Pack, Black)

What can I say? These work perfectly for the Era 300’s. They are solidly built but give you a wide range of motion for adjusting the speakers to your liking. Easy to install and well thought out.

Sturdy design with a good finish. The speaker mounts perfectly. The mount is hidden behind the speaker. Good quality.

Well made, easy to use.

Great price and great quality. The look good and hold these speakers in various orientations with ease. Documentation and mounting hardware was good as well

I have to give this product 5-stars as it met or exceeded all of my expectations for a mount for pretty heavy Sonos 300 speakers. I would recommend that people with drywall use appropriate anchors. I recommend having at least one or 2 of the 4 holes supported by toggle bolts in that case. But anyways, great product and works well. Glad to have my speakers on the wall behind the couch :)

Buenisimo

I was expecting it to be more sturdy and better attached to the speakers. It claims you can mount the speakers upside down but when I did that - there was a gap at the back of the speaker between the speakers to the base of the mount - made me concerned the speakers might fell off the mount at some point.

Worked