Specifications of BBX-F1200: Max Power Output Ratings. Total Max Power: 600W. RMS Power Ratings. . Per Channel into 4ohms (≤1%THD+N): 4 x 50W. Per Channel into 2ohms (≤1%THD+N): 4 x 70W. Bridged into 4ohms (≤1%THD+N): 2 x 130W. Sound Tuning. Crossover Frequency (Variable, OFF/LPF/HPF Selectable). 1/2 Ch: LP/HP: 50Hz - 500Hz. 3/4 Ch: LP/HP: 50Hz - 500Hz. EQ (Equalizer): Bass EQ Fixed Frequency 45 Hz, Q=0.5, Variable Gain 0dB to +12dB (3/4 Ch only). Dimensions 12.99" x 2.04" x 9.44". General Power Requirements: 14.4 V DC (11 V to 16 V). Input Sensitivity: 0.2 - 8.0 V. Frequency Response: 5 Hz - 50 kHz (+ 0,-3 dB). Speaker Impedance: 4 or 2 Ω. Signal to Noise: S/N Ratio (IHF A Weighted, Reference: rated power into 4ohms) 95 dB