JBL A1504 4-Channel Marine Amplifier - 150 watts RMS x 4

JBL Marine A1504 4-Channel Marine Amplifier – Compact Power for Precision Sound

The JBL Marine A1504 is built for those who want strong, clean audio performance on the water without sacrificing space. Designed with a compact footprint and low-profile chassis, this 4-channel marine amplifier fits easily into tight installations while still delivering serious output. Whether you're upgrading your current system or building something new, this amplifier brings reliable power and refined control to your setup.

Compact Design That Fits Where Others Can't

Space on a boat is always limited, so why waste it? The JBL Marine A1504 is engineered with a slim, efficient design that allows it to be installed in more locations than traditional amplifiers. It’s like fitting a powerful engine into a small frame—you get performance without the bulk.

Precision Sound with Variable Crossovers

Ever wish you could fine-tune your audio exactly the way you want it? With variable high-pass and low-pass filters ranging from 32 to 320 Hz, this amplifier gives you full control over your sound. Adjusting frequencies feels less like guesswork and more like dialing in the perfect balance for your environment.

Flexible Input Control for Any Setup

The JBL Marine A1504 adapts easily to both aftermarket and factory systems. With high-level and low-level inputs, it integrates seamlessly into your existing setup. The input level control lets you fine-tune sensitivity depending on your signal type, ensuring consistent performance without distortion.

Expand Your System with Preamp Outputs

Planning to grow your system later? No problem. Full-range preamp outputs allow you to connect additional amplifiers without needing splitters. It’s a simple way to expand without complicating your wiring or reducing signal quality.

Smart Turn-On Mode for Better Efficiency

The selectable turn-on mode gives you more control over how your amplifier powers up. Whether you're working with low-level or high-level signals, this feature helps prevent unnecessary battery drain. Think of it as a smart switch that keeps your system ready when you need it and off when you don’t.

Clean Audio with Low Noise Performance

Engine noise interfering with your music? That’s a common frustration—but not here. Balanced Differential Inputs reduce noise and distortion, even at higher output levels. The result is clearer sound that stays consistent, even in demanding marine environments.

Built-In Protection You Can Rely On

The JBL Marine A1504 includes full on-board protection against short circuits, overheating, overvoltage, and undervoltage. An LED indicator alerts you if something isn’t right, so you’re never left guessing. It’s like having a built-in safety net for your system.

Efficient Class D Power Output

With Class D amplifier technology, this unit delivers high output while keeping power consumption low. You get up to 150 watts RMS per channel at 4 ohms, and even more when pushing the limits. It’s efficient, powerful, and built for long sessions without unnecessary strain on your system.

Technical Specifications

• Product type: 4-channel marine amplifier
• Power output: 150 watts RMS x 4 at 4 ohms; 225 watts RMS x 4 at 2 ohms
• Bridged power: 450 watts RMS x 2 at 4 ohms
• Filters: Variable high-pass and low-pass (32–320 Hz, 12 dB/octave)
• Inputs: Preamp and speaker-level inputs
• Preamp outputs: Yes
• Fuse rating: 35A x 3
• Recommended wiring: 4-gauge power and ground
• Dimensions: 360mm x 51.3mm x 180mm (14-3/16” x 2-1/16" x 7-1/8”)

What’s Included

• One JBL Marine A1504 four-channel amplifier
• 4 bare wire-to-RCA adapters
• 6 35A ATO fuses (3 installed, 3 spare)
• Two JBL stickers
• Owner’s manual
• 4 mounting screws (M4 x 53mm)
• 1 logo badge

Why This Amplifier Stands Out

The JBL Marine A1504 brings together compact design, flexible integration, and dependable performance. It’s built to handle the realities of marine environments while giving you control over every detail of your sound. If your system feels limited or lacks clarity, this amplifier steps in and fills that gap with precision and power.

FAQs

Can the JBL Marine A1504 work with factory stereo systems? Yes, it supports both high-level and low-level inputs, making it compatible with factory and aftermarket systems.

Does this amplifier allow system expansion? Yes, it includes full-range preamp outputs so you can connect additional amplifiers without splitters.

What kind of sound control does it offer? It features variable high-pass and low-pass filters that allow precise tuning between 32 and 320 Hz.

How does it handle noise from the engine? Balanced Differential Inputs help reduce noise and distortion, keeping audio clean even in noisy environments.

What protections are built into the amplifier? It includes protection against short circuits, overheating, overvoltage, and undervoltage, with an LED indicator for status monitoring.