I was told that this has “theater like feel” to it. Once i set this up with the Sonos soundbar, I was highly impressed. I went to the movie theater after buying this set up, and was disappointed in the theater. The Sonos set up has more bass that shakes the room than the movie theater did! Absolutely love this. Perfect for music, movies, and games. Fully adjustable equalizer also in the app.

Huge and articulate sound, especially for its size. I feel it is worth the money. I use with a Sonos Amp and an additional sub (a Gen 1 and this Gen 3). I am a metalhead and I’ve found the Sonos sub to be perfect for that. There is enough bass to feel the thump of the kick drum, but it’s articulate enough that you can still hear both the bass guitar and kick during fast passages. It moves plenty of air to fill a big room with bass during a movie also, but I’ve found that it really shines with music.
The above still applies to only having one sub, but the second sub really shines in my listening room because I don’t have enough room treatments to avoid large bass cancellations in some of the listening positions. So with one sub, parts of the room had super full bass and other parts didn’t. Adding the second sub has now filled out the sound in the listening positions that were previously suffering. Current room I listen in is pretty large. It’s an open floorplan, with the living room, kitchen, and dining room.
I bought my first Sonos Sub in late 2015. At that point, I was using an SVS PB1000 (a 12″ ported sub) and literally never missed it once it was gone. This is likely subjective because of my music tastes, so take with a grain of salt. I do watch a lot of movies and TV though, and still super happy with the Sonos Sub.
If I was forced to say anything I dislike, it would be difficult. I would imagine a high end sub setup could still be significantly better than this, especially because bigger speakers can just literally move more air, but with my specific tastes and room, I’m very happy with these.

Thunderous bass with room filling sound. The best subwoofer on the market. Exceptional design and incredible quality. Pair with the Sonos arc for the best audio experience.

This Sonos Gen 3 Sub completes my Sonos Beam and One SL system. It provides that missing dimension I didn’t think I needed. I could have waited for the Gen 4, but the information between the two were sparse at time of purchase. I doubt I could discern the difference in improvement between the two. It has a large room filling sound for having such a small footprint, It’s aesthetically pleasing, can be placed or hidden in inconspicuous places if desired, but mostly it performs! Yes it’s expensive, but in a few months I’ll have forgotten it’s cost, while still savoring the rich deep clean bass for years to come.