e1400D Rated Power at 12.5 V: 1 x 240 Watts RMS at 4 ohms 1 x 400 Watts RMS at 2 ohms Input Range: 200 mV - 8 V RMS THD at rated power: 0.08% at 4 ohms Signal to Noise Ratio: >90 dB referred to rated power Frequency Response: 10 Hz - 250 Hz (+0, -1 dB) Damping Factor: >500 @ 4 ohms / 50 Hz Dimensions (L x W x H): 11.81" x 9.25" x 2.36" (300 mm x 235 mm x 60 mm)