The Sonos Roam has actually been sitting at the highest of our best Bluetooth speakers list for some time now and we really like that it seamlessly gets part of your Sonos Wi-Fi multi-place setup indoors, too. The chart underneath shows the maximum output for our current speaker recommendations, https://www.bluetoothspeaker.top/usb-bluetooth-speaker-with-hd-sound-usb-wireless-stereo-bass-speaker/