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 5Hz25kHz
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