SATISFIED!! This Sonos sub has some serious low end bass frequencies 🤤 My set up was a Sonos Arc and two Sonos 1’s Gen2. The sound output from those alone was amazing when listening to music and watching movies especially in Dolby Atmos! After adding the Sonos Sub, it transformed the sound output all round! The whole system just sounds so much better. Adding the sub reduces the bass in the Arc and surrounds and gives more Mid range and treble. The Sub takes over the job of bass and it does it so well! The end result is cleaner crisper mid and treble ranges and lot of bass from the sub that seriously kicks. This is a must for anyone with either an arc or playbar… it not only gives thumping bass but it’s a total upgrade to the sound output all round! Extremely happy with this purchase and super fast delivery too… thank you