DIAMOND AUDIO DXM800.4D 
DXM 4-Channel Full Range Class D Waterproof Amplifier
GENERAL FEATURES:
800W RMS MOTORSPORT-Series 4-Channel Compact Water Resistant Amplifier
Power Rating:
200 W x 4 @ 2Ω
125 W x 4 @ 4Ω
400 W x 1 @ 4Ω bridged
Crossover :12dB 40-400Hz
Frequency Response: 10 – 33KHz
Frequency Response: 10 Hz - 33KHz
Signal to Noise Ratio: 98 dB
Overall Efficiency: > 80%
Input Sensitivity: 0.2 V ~ 10.0 V
Dimensions: 11.56” x 4.33 x 1.7 “ / 293.6 (L)x 110 (W) x 43.2 (H) mm
IPX67 Rated Waterproof Multi-Layer Circuit Board
Balanced Differential Inputs for Noise-Free Operation Regardless of the Source
Full-Range Digital Class-D Technology with DirectFET Power MOSFET Output Stage
12 dB/Octave Adjustable Crossovers
1 Year Warranty