M-Audio BX5 D3, Active 2-way near field reference studio monitor, Tweeter: 1 inch (25 mm) 60 W silk dome tweeter, Woofer: 5 inch (127 mm) 40 W woofer with kevlar membrane, Amplifier: 100 watts RMS bi-amp Class A / B power amp, Sound pressure (max SPL): 110 dB, Crossover: 2 kHz, Further sound adjustments: Acoustic Space, Frequency range: 52 - 35,000 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: 20 kOhm balanced, 10 kOhm unbalanced, Protection Circuits: Overheat, Transient and Subsonic Protection Circuit, Output current limiter, Shielded against RF interference, Controls: Volume control, Acoustic Space switch, Housing: vinyl-coated MDF, Power consumption: 100W, Power supply: internal power supply 100 - 120 V / 220 - 240 V, 50/60 Hz, Dimensions: 254 x 176 x 197 mm, Weight: 6 kg, Including acoustic foam pads