If you need anything louder: The Ultimate Ears Hyperboom is a great preference if you need loud volume for outdoor events, or if you want fuller, clearer sound than smaller Bluetooth speakers can provide. It maxed out at 99. The ideal frequency range is concerning 100Hz to 20,000 Hz. https://www.bluetoothspeaker.top/new-arrival-multi-function-wireless-bluetooth-speaker-with-led/