A:Answer About 130 to 150 db depending on the song, the songs original recording levels and the output level of the sourcwe device such as phone, pc, etc. There are 3 main volume control usually with a simple phone or pc to speaker via bluetooth, the output or source device, the media player volume, and the main speaker volume on the speaker itself which is the only control that directly increases or decreases the onboard amplifiers potential volume output. You may also have additional volume controls on a ny other peripherals such as a DAC, pre-amp, mixer, synthesizer, or equalizer, etc.