Purchased two sets of these ERA 100s (4 speakers total) to use for some Christmas gatherings at my house. VERY EASY to install and setup. Got going perfectly. Was super happy with everything. HOWEVER, throughout the month of use, I've encountered numerous issues with the Sonos app. Sometimes, there is a HUGE delay when adjusting the volume on my phone and when it actually takes effect on the speaker. Put it to max volume by accident? Decrease the volume on your phone. Oh wait, it sometimes takes 15 seconds to finally decrease. Other times, the speakers would completely disappear from the Sonos app like they were never there. They'll show up again randomly and work again. If you take a second to google "Sonos app problems", you'll see that Sonos recently (in the past year) made a huge overhaul of their phone app. It ended up being an absolute disaster and they lost the respect of all their Sonos dedicated customers. CEO even released an apology statement. DO NOT buy any Sonos product for now. At least until all the bugs are officially fixed. huge headache currently

Excellent sound that fills the room. Having a pair allows you to do a stereo effect and the Sam's Club price is a great deal!

Great sounding speakers, just a terrible phone app. Terrible setup, speakers are close to my wifi and I have various problems every day with some type of connection. Really frustrating that they haven't improved this part. It's not like it's a brand new product.

Sonos speakers sound very good. Great price from Walmart.

Great product love the speak active feature

Great speakers at a great price!

Deep rich sound that fills a room.

Excellent product prompt delivery

Love the sound, size and portability of these speakers.

Awesome product