NAD C 390DD. Total Harmonic Distortion (THD): 0.005 %, Signal-to-Noise Ratio (SNR): 124 dB, Frequency response: 20 - 96000 Hz. Speakers connectivity type: RCA. Power consumption (typical): 40 W, Power consumption (standby): 0.5 W. Width: 435 mm, Depth: 388 mm, Height: 132 mm