The JBL's LSR308 is a 8" two-way powered studio monitor with a bi-amplified reference monitor with a magnetically shielded 8" low frequency transducer and a 1" soft-dome high frequency transducer. For accurate audio reproduction, the monitor uses JBL's Image Control Waveguide technology. For better bass response, this powered speaker also has JBL's Slip Stream port design. An LF and HF trim switch, as well as dual 56W Class D amplifiers for both drivers, are included in the LSR308. JBL incorporated a balanced XLR input and a balanced 1/4" input for flexible connectivity "Both TRS inputs have a recessed volume control.