Upgrade your studio's low-end response with this used JBL LSR310S 10" powered subwoofer in good condition. Designed to complement JBL's 3 Series monitors, it delivers deep, accurate bass down to 27Hz, thanks to a 200-watt Class D amplifier and JBL's patented Slip Stream port for tight, distortion-free performance. The sub features selectable crossover settings (XLF, 80Hz, External) and balanced XLR and 1/4" TRS inputs for flexible integration into your setup. With minor cosmetic wear and fully functional audio performance, this LSR310S is a cost-effective way to extend your mix accuracy and enjoy professional-grade low frequencies in your home or project studio.