The D4.75 is a mini chassis amp designed to make space constrained installations a breeze. Don’t be fooled by its small stature; in 4 ohm bridged mode this little powerhouse can produce over 2 x 180Watts.  It also features a conformal-coated PCB for added moisture and dust protection in harsh environments; making it perfect for motorcycles, UTVs, and boats.

All controls and connections are located on one side for ease of installation in motorcycle fairings, dashes, under seats, behind seats or in consoles.


  • Conformal Coated PCB
  • 5-way Protection
  • Variable 12dB/Oct
  • Heavy Duty PCB
  • RCA Signal Pass-through
  • MOSFET Power Supply Amplifier
Test Voltage: 14.4
Channels: 4
Cont Wattage @ 4ohm: 75 x 4 / 180 x 2
Cont Wattage @ 2ohm: 90 x 4
Max Current Wattage Draw – Amps: 40
S/N Ratio: > 90dB
THD: < 0.2%
Input Voltage Sensitivity: 6V ~ 0.2V
Pass-Through Output: Yes
Remote Subwoofer Control: No (Remote Sold Separately)
Power Wire Gauge – In: 2 x 18
Speaker Wire Gauge – Out: 18
Dimensions (In): 6.2 x 3.9 x 1.7
Dimensions (MM): 160 x 100 x 45
Shipping Weight (Lbs): 2
Price (USD): 310
The D Series amplifiers are designed to be the best amps on the market for the everyday mobile audio enthusiast. These class D amplifiers feature compact chassis, superb sound quality, reliable circuits, and powerful output sections. They're available in several channel and power configurations assuring there is a D Series amp to power your system.


Included in the Box

DD Audio
4025 NW 36th Street
Oklahoma City, OK 73112
(405) 239-2800 | Fax: (405) 239-7100