It lacks small bass compared towards the larger EPICBOOM, as well. You can check out the Anker Soundcore Movement Boom Plus if you want a similarly priced waterproof speaker with somewhat far more very low bass. Even so, the Anker is not quite as small because the Ultimate Ears, https://www.bluetoothspeaker.top/bt-speakers-with-hd-audio-and-enhanced-bass-built-in-speaker-phone/