Nevertheless, the S1 Professional typically peaks at around 109 decibels. It features a three-channel mixer, with selections for reverb and EQ, plus multiple inputs for mics and instruments alongside a focused aux channel for other music sources. The speaker can previous nearly 11 several hours with a QuickCharge function https://www.bluetoothspeaker.top/sound-system-video-player-bluetooth-speaker-for-apple-iphone8-iphonex/