OontZ Bluetooth Speaker Coors Edition, Portable Wireless Speaker, 14 Watts, up to 100 ft Bluetooth Range, IPX7 Waterproof Speaker

One of these sounds as good or marginally better than an Amazon Echo, full size, not the Dot. Very near the same sound output volume wise. You can run these at max volume and they don't distort. The coolest feature is that you can chain them together. Set one up to Send, which is paired to your phone, and then as many as you want to Receive. I have four and when chained together they sound really good and fill the whole house with music. They sound better together, but one is plenty for one room. The Bluetooth radio on them is really strong and it pairs quick to your phone. I can put one in each room of the house and they keep connected. I've left one in the living room paired to the phone, and walked out to the back corner of the yard with one of the chained ones and it was just fine. It never lost signal or broke up. It's maybe 75 ft away?