I have 2 Sonos Ones operating in stereo mode in a small room about 15' x 15', room 1. Then in a connected room of about same size, I have 2 more Sonos Ones, room 2. Each room is set up in the app etc. I have always been very happy with the sound from Sonos One, but it never came close to matching my living room TV set up with Denon 5.1 amp with Klipse speakers & sub bin or my "muscle stereo" in the work out room that has an old school 2-channel set up with real amps and real big pro speakers. Not surprising. But then I added the mini sub to the first Sonos One room, room 1, where I hang out the most. The difference is simply amazing! It is such a nice upgrade where the music just fills up the space and is now on par with the TV surround sound and "muscle amp" system ... MoreI have 2 Sonos Ones operating in stereo mode in a small room about 15' x 15', room 1. Then in a connected room of about same size, I have 2 more Sonos Ones, room 2. Each room is set up in the app etc. I have always been very happy with the sound from Sonos One, but it never came close to matching my living room TV set up with Denon 5.1 amp with Klipse speakers & sub bin or my "muscle stereo" in the work out room that has an old school 2-channel set up with real amps and real big pro speakers. Not surprising. But then I added the mini sub to the first Sonos One room, room 1, where I hang out the most. The difference is simply amazing! It is such a nice upgrade where the music just fills up the space and is now on par with the TV surround sound and "muscle amp" system in workout room. I was amazed of the quality of the sound, and I am so pleased with this product. The only downside is now I am going to have to purchase another one to add to the 2nd room because the difference is so dramatic, I just have to do it! But really in no hurry as the mini bass set up in 1st room "bleeds" into the 2nd room enough to enhance the sound in room 2 as well. But eventually adding another mini to have one in each room is in the future for me. Set up was amazingly simple as the app quickly recognized the mini, updated it, and then added it to the system. Only "tricky" part was I had to lastly "assign" it to a room as it can only be assigned to one room. Everything was completed on an iphone in the app. Easy peasy.

The staff at Watford Richer Sounds were very helpful. I was trying to decide whether to keep my Arc and add a sub or sell the Arc and buy a soundbar with the money. After a demo of a mid range Denon bar I decided adding a sub to the Arc was the best thing for me to do. The sub integrates well into the Arc both in set up and sound. From experience of setting up less smart subs I think the low pass is set to 90-120Hz, so if there are frequencies under that the sub will play them. How loud it plays them is again down to whatever you are listening to. The out of the box setup is, to me, a fair representation of what’s there in the original sound. After listening to TV and music for a few days I’ve found that music is improved with the sub because it adds a bit of weight ... MoreThe staff at Watford Richer Sounds were very helpful. I was trying to decide whether to keep my Arc and add a sub or sell the Arc and buy a soundbar with the money. After a demo of a mid range Denon bar I decided adding a sub to the Arc was the best thing for me to do. The sub integrates well into the Arc both in set up and sound. From experience of setting up less smart subs I think the low pass is set to 90-120Hz, so if there are frequencies under that the sub will play them. How loud it plays them is again down to whatever you are listening to. The out of the box setup is, to me, a fair representation of what’s there in the original sound. After listening to TV and music for a few days I’ve found that music is improved with the sub because it adds a bit of weight to the bottom end that the Arc can’t produce. With TV sound tracks it produces a satisfying bottom end and thump if it’s there. The highest praise I can give the sub is that you don’t know it’s there until the sound track needs it then it makes its presence felt. None of that thud-thud-thud you hear from badly tuned car subs and no vibration from a badly built enclosure. This is a grown up sub, and for the price it should be. However if it lasts (thanks for the free 6 year guarantee Richer Sounds) as long as my other Sonos gear then I’ll feel a bit better about the price, which at Richer Sounds was the cheapest I’d found.

I purchased the Sub Mini to add depth of sound to a pair of One SLs in the living room. Being an Android user I have to say that before I was able to loan an iPhone to Trueplay tune the system it sounded terrible! Extremely indistinct, flabby and bloated bass, even with Sub level set low, and I was not impressed one bit. (I had previously tuned the One SLs as a stereo pair when I got them) so adding the Sub Mini removed that tuning and made everything very muddy. However once tuned the difference was startling, giving much needed clarity back and in my small room there's enough low end on offer to really feel deep notes from certain genres of music. (Rap, hip hop). What I have noticed is that at low-ish volumes when I switch the Sub OFF the music can seem more ... MoreI purchased the Sub Mini to add depth of sound to a pair of One SLs in the living room. Being an Android user I have to say that before I was able to loan an iPhone to Trueplay tune the system it sounded terrible! Extremely indistinct, flabby and bloated bass, even with Sub level set low, and I was not impressed one bit. (I had previously tuned the One SLs as a stereo pair when I got them) so adding the Sub Mini removed that tuning and made everything very muddy. However once tuned the difference was startling, giving much needed clarity back and in my small room there's enough low end on offer to really feel deep notes from certain genres of music. (Rap, hip hop). What I have noticed is that at low-ish volumes when I switch the Sub OFF the music can seem more bassey, which just requires that I turn the Sub back ON and up the Sub level a few notches. This is credit to how good the Ones are at reproducing low frequencies but the Sub will add those extra 30-40hz that the One's small drivers cannot hit and complete the 'experience'. It's a somewhat costly way to add that bottom end because I do not wish to use the Sub for a home theatre set up but it looks cool sat neatly under a small table and is the solution I needed from Sonos, as the big Sub, as awesome as it is, is just silly money for what I am looking for and the space I live in.