This Model Has Been Discontinued
D4.100a
D Series 4 Channel Amplifier

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Mhadoyz Car Audio & Accessories
MHADOYZ CAR ACCESSORIES, Zabarte Road, Novaliches, Quezon City, Metro Manila, Philippines
Murtas Elektronik San. ve Tic. A.S.
Atatürk Mahallesi, Atatürk, Büyükçekmece/İstanbul, Turkey
Neoglow Designs Electronics Trading
NEOGLOW Designs - Abu Dhabi - United Arab Emirates
Reference Audio
Unit 23 Brentwood Business Park Road 3, Brentwood Park, Benoni, South Africa
SOUND HI-FI CAR SHOP
Via Giuseppe Semmola, 52, Ercolano, Metropolitan City of Naples, Italy
Sound Solutions & Auto Electrical
113e Ellis Street, Frankton, Hamilton, New Zealand
!!!PRODUCT UPDATE!!! The D4.100a is being replaced by the D4.125. Same Size, Same Price, More POWER!
Contact your local dealer about preordering the D4.125. If you’re having issues finding a local dealer please contact us directly for assistance.
D Series amplifiers are compact amplifiers with full size features. The D4.100a is a bridgeable four channel amplifier with a total output power of 640 watts. If you need solid power and clean sound, but don’t have much room to spare, this amp is perfect for the application. Precision tuning is made easy with variable bandpass crossovers and LED clipping indicators. Installation is made easier with single side controls and connections, input mode switches, and auto turn-on options. For boat, bike, and ATV applications conformal coated internal circuitry and corrosion proof switches offer increased moisture resistance. Even though the D Series amplifiers are very compact they still employ set screw power and speaker terminals, discrete output sections, and heavy duty anodized aluminum heatsinks. This ensures power management is proper from input to output, increasing both in-use stability and long term durability.
Features
- Conformal Coated Internal Circuitry
- Corrosion Proof Switches
- Full Bandpass Crossovers
- Auto Turn-On Options
- Clipping Indicators
- Differential RCA Inputs
- 2ch or 4ch Input Mode
D4.100a: 400 Watt – Compact 4 Channel Amplifier
Operating Voltage: | 9 - 16 |
Test Voltage: | 14.4 |
Output Channel(s): | 4 |
Continuous Wattage @4ohm: | 100 x 4 / 320 x 2 |
Continuous Wattage @2ohm: | 160 x 4 |
Max Current Draw (Amps): | 64 |
RCA Input Voltage Sensitivity: | 8 ~ 0.2 |
RCA Input S/N: | >85dB |
Damping Factor: | > 100 |
THD: | < 0.2% |
Frequency Response (Hz): | 30 - 30k |
High Pass Filter: | 30 - 5k |
Low-Pass Filter: | 50 - 5k |
Pass Thru Output: | No |
Power Wire Gauge: | 4 |
Speaker Wire Gauge: | 12 |
Dimensions (Inches): | 7 x 4 x 1.7 |
Dimensions (MM): | 180 x 104 x 43 |
Price (USD): | 459 each |
LOUD AND CLEAR
If you’re looking for superior motorcycle audio solutions that sound as good on the highway as they do while you’re jammin’ out in the parking lot, we’ve got you covered. From amplifiers to speakers and DSP’s, these products are powerful enough to break through the roars of the ride to give direct, loud and clear sound.
Learn why these products are the superior choice for motorcycle audio solutions.

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.
Resources
Included in the Box
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Hex Wrenches
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Mounting Screws
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Spare Switch Jumpers

Support Small Business and Enjoy Expert Installation
We believe in supporting brick and mortar dealers and have carefully partnered with small businesses who can provide quality installation and customer satisfaction befitting DD AUDIO® equipment.
Check with your local dealer for stock and promotional discounts.