QSC CB10 Battery-Powered Portable Loudspeaker - 10in es-330 The SPA2-60 and SPA4-60 are

The SPA2-60 and SPA4-60 are housed in an unobtrusive black painted 1/2 RU chassis with unique mounting hardware enabling rack

The knob closest to the neck is the bridge volume knob

endurance and availability

uniform fog plume soaring over 15 feet into the air

A boost feature is available by pressing the boost switch

QSC CB10 Battery-Powered Portable Loudspeaker - 10in es-330 The SPA2-60 and SPA4-60 areIdeal for DJs, events, and parties, the QSC CB10 is a portable, battery powered 2 way loudspeaker featuring a 10" high excursion LF driver and an advanced 1" compression driver for potent sound reproduction. With two XLR 1 4" combo mic line instrument jacks, a 3 channel mixer, and factory DSP presets for any application, the CB10 is extremely versatile. The CB10 features Bluetooth 5. 1, which supports remote control via the QSC Loudspeaker Control app