JBL A758 8-Channel Marine Amplifier - 75 Watts RMS x 8

JBL A758 8-Channel Marine Amplifier - 75 Watts RMS x 8

The JBL Marine A758 is built for boat owners who want strong, clean sound without sacrificing space. With a compact, low-profile design, this 8-channel marine amplifier fits easily into tight installations where every inch matters. It delivers reliable performance while keeping your setup clean and efficient, making it a smart choice for both new builds and upgrades.

Designed for Tight Marine Spaces

Not every boat has room for bulky equipment. That’s where the JBL Marine A758 stands out. Its small footprint and slim chassis allow it to fit into areas where traditional amplifiers simply won’t go. Think of it like packing serious power into a streamlined shell—efficient, practical, and purpose-built for marine environments.

Flexible System Tuning with Variable Crossovers

Ever feel like your system is missing that perfect balance? The JBL Marine A758 gives you control. With variable electronic crossovers ranging from 32 to 320 Hz, you can fine-tune your audio for cleaner highs and deeper lows. It’s all about dialing in the sound exactly the way you want it.

Seamless Integration with Any System

Whether you're working with a factory stereo or an aftermarket setup, the JBL Marine A758 adapts easily. It supports both high-level and low-level inputs, so compatibility isn’t a concern. Input level control allows precise sensitivity adjustment, ensuring your system performs consistently without distortion.

Expandable Audio Setup Made Simple

Planning to expand your system? No problem. The full-range preamp outputs make it easy to connect additional amplifiers without needing splitters. It’s a clean, efficient way to grow your setup without adding unnecessary complexity.

Smart Turn-On Mode for Battery Protection

The selectable turn-on mode lets you switch between DC and REM, depending on your signal type. Why does that matter? It helps prevent unwanted battery drain when the amplifier isn’t in use. It’s a small feature that makes a big difference in real-world use.

Clean Sound with Low Noise Performance

Marine environments can introduce unwanted noise, especially from engine interference. The JBL Marine A758 uses balanced differential inputs to reduce noise and distortion, even at higher output levels. The result is clearer, more consistent audio across all channels.

Built-In Protection for Reliable Operation

Reliability matters on the water. This amplifier includes full onboard protection against shorts, overheating, overvoltage, and undervoltage. An LED indicator keeps you informed, so you always know your system’s status.

Efficient Class D Power Output

Using Class D amplifier technology, the JBL Marine A758 delivers up to 1000 watts RMS while maintaining efficient power usage. That means strong output without excessive strain on your electrical system—a balance that’s essential for marine applications.

Flexible Input Modes for Custom Configurations

The JBL Marine A758 offers multiple input modes—2-channel, 4-channel, and 8-channel—giving you flexibility in how you route audio signals. Whether you’re simplifying connections or building a complex setup, this feature keeps your system organized and adaptable.

Specifications

• Power output at 4 ohms (14.4V): 75 watts RMS x 8
• Power output at 4 ohms (12.8V): 65 watts RMS x 8
• Power output at 2 ohms (14.4V): 125 watts RMS x 8
• Power output at 2 ohms (12.8V): 100 watts RMS x 8
• Bridged power at 4 ohms (14.4V): 250 watts RMS x 4
• Bridged power at 4 ohms (12.8V): 200 watts RMS x 4
• Frequency response: 20–20,000 Hz
• Crossover range: 32–320 Hz variable, 12 dB/octave
• Line-level input sensitivity: 200mVrms – 5Vrms
• High-level input sensitivity: 1Vrms – 25Vrms
• Signal-to-noise ratio: 80 dB
• THD+N at rated power: 1%
• Fuse rating: 105A
• Operating voltage: 9–16VDC
• Amplifier class: D
• Dimensions: 360mm x 51.3mm x 180mm (14-3/16" x 2-1/16" x 7-1/8")
• Weight: 3.7 kg
• Recommended power wire: 4 AWG

Built for Performance on the Water

The JBL Marine A758 combines compact design, flexible tuning, and reliable power into one streamlined unit. It’s made for those who want control, clarity, and efficiency in their marine audio system without overcomplicating the setup.

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FAQs

1. What is the power output of the JBL Marine A758? It delivers 75 watts RMS per channel at 4 ohms and up to 125 watts RMS per channel at 2 ohms.
2. Can the JBL Marine A758 work with factory stereo systems? Yes, it supports both high-level and low-level inputs for easy integration with factory and aftermarket systems.
3. Does the amplifier support system expansion? Yes, it includes full-range preamp outputs to connect additional amplifiers without splitters.
4. How does the JBL Marine A758 handle noise and distortion? It uses balanced differential inputs to reduce noise and maintain clean audio even at higher output levels.
5. What type of amplifier technology does it use? It uses Class D amplifier technology for efficient power delivery and reduced current draw.