It lacks low bass compared to the larger EPICBOOM, also. You could check out the Anker Soundcore Movement Boom Plus If you'd like a similarly priced waterproof speaker with a little bit much more lower bass. Nonetheless, the Anker is not quite as small given that the Ultimate Ears, https://www.bluetoothspeaker.top/bass-woofer-subwoofer-wireless-smart-bluetooth-sound-equipment/