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AD300.2 Two Channel Amplifier (AD302)
AD300.2 Two Channel Amplifier (AD302)

Support Resources for AD300.2 Two Channel Amplifier

Written by Aquatic AV
Updated over a week ago

What Are You Looking For?


This compact amplifier packs a serious punch with 300 Watt power. Digital technology makes this amplifier an efficient use of power, lowering battery strain without compromising sound. Waterproof and dustproof, the AD300.2 Micro amplifier is built for durability and is great at staying out of sight.


  • 300 Watt Amplifier With 300W of pure power, this compact, 2-channel amplifier packs a serious punch even in the loudest of environments.

  • High-Pass/Low-Pass Cross-Over A built-in High-Pass/Low-Pass cross-over is adjustable from 40Hz to 400Hz and allows the output to be filtered for optimum use with a subwoofer or mid/high-range speakers.

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

  • Digital (Class D) Technology Digital (Class D) amplifiers produce less heat, lowering power consumption and reducing strain on batteries.

  • 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 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 IP65) 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?

  • AQ-AD300.2-MICRO Amplifier

  • User/Installation Manual

  • RCA male-to-male Adaptor (x2)

  • Wiring Harness

  • High-Level Input Adaptor

Environment Installation Instruction

On the stereo, locate the following:

1. Locate either the Rear or Front line output RCA.

2. Locate the blue remote trigger wire.

On the amplifier, locate the following:

1. Locate the extra harness that came with the amplifier.

2. Locate your RCA input.

3. Locate your Speaker wire output (Gray/Black, Gray, White/Black, White).

Please note: The Gray set of speaker wires are your right side, and the White set of speaker wires are your left side.

4. Locate your power and ground wire.


1. Connect your right speaker to the amplifier's gray set of wires (solid gray is your positive and gray/black is your negative).

2. Connect your left speaker to the amplifier's white set of wires (solid white is your positive and white/black is your negative).

3. Connect the Input RCA from the amplifier to one of the output RCAs from the unit. This connection can happen with either the front line output or rear line output, depending on where you want the amplifier to be.

4. Connect the blue remote trigger wire from the stereo to the amplifier's blue wire.

5. Connect the ground and power wire from the amplifier to your battery.

Please note: The fade option works by default. You can keep the fade option with a 4-channel amplifier.

Frequently Asked Questions

Q1. Can I use this to power 4 speakers Front and Rear?

A1. Yes, even though the AD300.2 is a 2 channel amplifier, you can still power 4 speakers with it. To do this you can wire them in series and have 2 front speakers on 1 channel and the rear speakers on the other channel. However, doing so may sacrifice some of the sound quality.

Q2. Can I use the AD300.2 if my stereo does not have any RCA cables?

A2. Yes. Besides the RCA option, the AD300.2 also has a high-level input option for you to connect with your system.

Q3. Do I need a mounting bracket for the Aquatic AV 2-Channel Amplifier for Harley-Davidson?

A3. A mounting bracket is something we recommend. We have several mounting kits available for the Road Glide Fairings and Batwing Fairings models. You can also create your own customize mounting bracket; just be sure you can still fit your amplifier.

Please note: Do not mount your amplifier directly on top of the stereo or the stereo’s mounting bracket. Over time, this can damage the stereo with heat transfer. Additionally, doing so will void your warranty.

Q4. How do I connect speakers to the AD300.2?

A4. First, you will want to verify that the impedance of the speakers is 2 Ohms or above. Make sure to install the desired speakers if they are not already installed. After that, route and connect the speaker wires from each speaker of your system to the corresponding speaker output terminal on the amplifier's wiring harness. Failure to connect them properly may damage your speakers.





Digital (Class D) Bridgeable Amplifier


Yes – IP65

Input Channels (Low-Level):

RCA inputs (L & R)

Input Channels (High-Level):

Speaker inputs (L & R) with Auto Detect

Output Channels:


Output impedance (nominal):

4 Ohms / 2 Ohms

Power Output (RMS) @ 4 Ohms:

200W (2x 100W)

Power Output (RMS) @ 2 Ohms:

300W (2x 150W)

Power Output (RMS) – Bridged @ 2 Ohms:




THD (Bridged):


Frequency Response:

10Hz – 45kHz

High-Pass/Low-Pass Cross-Over Frequency:

Configurable from 40Hz – 400Hz

Bass Boost (@ 85Hz):

Configurable from 0 – 12dB

Overload Protection:



166 x 113 x 46mm


Owner's Manual

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