M-Audio BX8 D3, Active 2-way near field reference studio monitor, Woofer: 8 ""woofer (203 mm) 70 W with Kevlar membrane, Amplifier: 150W RMS bi-amp Class A / B power amp, Maximum level: 114 dB, Crossover: 1900 Hz, Further sound adjustments: Acoustic Space, Frequency range: 37 - 22,000 Hz, Inputs: balanced XLR input, balanced jack input, Input sensitivity: 85 mV input signal (pink noise) produces 96 dBA output level (sound pressure level at 1 m and maximum volume), Maximum input level: +21 dBu, Input impedance: balanced 10 kOhm, 20 kOhm unbalanced, Protection Circuits: Overheat, Transient and Subsonic Protection Circuit, Output Current Limiters, Shielded for RF Interference, On Delay, Controls: Volume control, Acoustic Space switch, Housing: vinyl-coated MDF, Power consumption: 150 W, Power supply: internal power supply 100 - 120 V / 220 - 240 V, 50/60 Hz, Dimensions: 384 x 250 x 302 mm, Weight: 11 kg, Including acoustic foam pads