Biamp Commercial Audio MA120. Amplifier class: D, Total Harmonic Distortion (THD): 0.5%, Signal-to-Noise Ratio (SNR): 90 dB. Speakers connectivity type: Euroblock. AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz, DC input voltage: 24 V. Width: 483 mm, Depth: 300 mm, Height: 89 mm. Package width: 411.7 mm, Package depth: 516.9 mm, Package height: 190 mm