Nevertheless, the S1 Professional typically peaks at around 109 decibels. It features a 3-channel mixer, with choices for reverb and EQ, plus multiple inputs for mics and instruments alongside a dedicated aux channel for other music resources. The speaker can very last up to eleven hrs with a QuickCharge https://www.bluetoothspeaker.top/bluetooth-speakers-powerful-bass-with-tf-music-soundbox-stereo-subwoofer/