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AD500.4 4-Channel Amplifier (AD504)
AD500.4 4-Channel Amplifier (AD504)

AD500.4 Amplifier Support Resources

Written by Aquatic AV
Updated over a week ago

What Are You Looking For?


Are you looking for a powerful universal amplifier that won’t strain your budget? Aquatic AV has you covered. Despite its compact design, the AD500.4 Amplifier is so strong that customers report needing to turn down the gain because of how much power it delivers, while digital technology allows this amp to run cool no matter where it goes. This amp breaks boundaries with high and low level RCA or speaker level inputs (cables supplied with unit). Capable of transitioning between 500mV to 10V, the AD500.4 is compatible with all systems. With 600 watts of pure power, this amplifier can operate in 3 different modes, four-channel, three-channel, and two-channel. It has electronic crossovers for any range and can be used as a stereo amp or a sub amp to pack a punch even in environments with high background noise. You don’t have to worry about damaging this device in tough conditions either; this device is fully waterproof (IP67) and designed with UV/salt/fog resistance to ensure reliable performance anywhere you go. The AD500.4 is 2 ohm stable, but can be used with 4 ohm speakers as well, and is a perfect choice for any application, including marine, powersports, side-by-side, motorcycle, auto, and even RV. For the best sound in sound quality and style, pair with any of Aquatic AV’s waterproof speakers!


  • 600 Watt Amplifier With 600W of pure power, this 4-channel amplifier packs a serious punch even in the loudest of environments.

  • Gain Controls This device comes with gain controls to match the output of the stereo to the amplifier.

  • Shockwave Technology Shockwave technology reduces unwanted EMI (Electromagnetic Interference) to prevent unwanted noise in your audio system.

  • Bridge Mode Bridge Mode allows the power of each channel to be combined for maximum output; this mode is ideal for use with a single subwoofer.

  • Various of Applications Designed to support a variety of applications, this amplifier runs at both 4ohms and 2ohms. Running 2ohm configurations is ideal for powering more speakers, making it a great choice for environments with high background noise.

  • Multi-Environment Protection This device is fully waterproof (rated IP67) and UV/salt/fog resistant to ensure reliable performance even in the toughest conditions.

  • 2 Year Warranty This product comes with a two year warranty that can be extended with product registration online or via the Aquatic AV App.

What's in the Box?

  • 4 -channel amplifier

  • Two (2) Output cable with connector

  • Four (4) stainless steel mounting screws

  • Four (4) mounting brackets with hardware included Two (2) Cables for RCA input

  • Two (2) Cables for the Speaker Level

  • Owner’s Manual





4/3/2 Channel Amplifier




8.9 x 4.5 x 1.6″


Yes – IP67

Overload Protection:


Input Channels:

4xRCA, 4 speaker level input

Output Channels:


Impedance Output (nominal):

4 Ohms / 2 Ohms

Power Output (max) @ 2 Ohms:

600W (4 x 150W)

Power Output (max) @ 4 Ohms:

400W (4 x 100W)

THD @ 4 Ohms, 100W:


THD @ 4 Ohms, 50W:


THD (Bridged), 300W:


Frequency Response:

20 Hz – 20,000 Hz

High Pass / Low Pass Cross-Over Frequency:

40 Hz – 400 Hz

Input Sensitivity:

0.2 – 10V

Operating Voltage:

9V – 16V DC

Additional Features:

Shockwave Technology


Owner's Manual

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