Focal FDP 1.900 V2 Mono Subwoofer Amplifier

Advantages:
Very small size for power output
Can be used in full range
High-level input, compatible with OEM Stereo
Easily accessible settings
Remote sub control
Invisible mounting bracket
Highest level of crossover flexibility

Specs

Power into 4 Ohms    1x500W rms
Power into 2Ohms    1x850W rms
Signal/noise ratio    >90dB (A)
Bass Boost    0to+6dB@40Hz
Frequency response    5Hz–25kHz
Continuous phase Adjustment    0-180°
Input Sensitivity    200mV to 10V
Dimensions(HxLxD):    1.97 x 10 x 7.71 in (50 x 254 x 196mm)
Protections    Short-circuit, thermal overload, polarity reversal, DC