Hifonics BXi1500D. Audio output channels: 1.0, Total Harmonic Distortion (THD): 0.03 %, Signal-to-Noise Ratio (SNR): 90 dB. Connectivity technology: Wired. Depth: 330 mm, Height: 60 mm. Power requirements: 12 V DC / 40A, Dimensions (WxDxH): 260 x 60 x 300 mm