Sundown Audio SDX-400.1

Moderate power, tiny size, but at the top-end of Full-Range Class-D fidelity. The controls will have a removable cover that bolts down on top of them. The overall case is a big chunk of cast aluminum to keep temperatures in check!
Mono Block Class-D Amplifier
1 x 400W at 1 Ohm
1 x 300W at 2 Ohm
1 x 175W at 4 Ohm
Recommended Fuse Rating: 40A
LoW Pass Filter (-12dB/8) Variable: 50hz-250hz
Input Sensitivity: 6V Max
S/N: >90dB
Cast Aluminum Heat Sync
Water Resistant
Highpass / Lowpass / Bandpass Filter
Gain Adjustment
Suitable for vehicles with start / stop function
Dimensions in mm (LxWxH): 147 x 102 x 54 mm
Digital Class-D Mono Block Amplifier
Dual MOS-FET PWM Power Supply
1 Ohm Stable Load
12 dB/Octave – Variable Low Pass Filter
DC Auto sense feature
0 to 12dB – Variable Bass Boost
4 Way Protection Circuit (Thermal, Voltage Speaker short and DC Offset)
Wired Remote Control
Note: Unscrew the badge using an allen key to access audio settings.