Cadence Sound SQA500.4 4-Channel Marine Class D Amplifier 500W

Marine-Grade Power for Every Adventure — Cadence Sound SQA500.4 4-Channel Marine Amplifier

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Whether you're on the water or on the road, the Cadence Sound SQA500.4 delivers clean, reliable 4-channel power built to survive the elements. With a conformal-coated PCB that resists corrosion in both freshwater and saltwater environments, this Class D marine amplifier is engineered for the conditions that would destroy a standard amp. 500W of total power, a signal-to-noise ratio over 96dB, and THD under 0.05% — this is serious audio performance in a compact, marine-rated package.

Key Features

• 500W 4-Channel Class D Amplifier: Powers four speakers with 125W x 4 at 2 ohms or 80W x 4 at 4 ohms for clean, efficient output.
• Marine-Rated Conformal Coating: PCB is coated for exceptional corrosion resistance in freshwater and saltwater environments.
• THD < 0.05%: Extremely low distortion for pristine, accurate audio reproduction at any volume.
• Signal-to-Noise Ratio > 96dB: Ultra-quiet background noise floor for clear, detailed sound.
• Selectable Low Pass & High Pass Filters (50Hz–150Hz): Dial in your crossover points to match your speaker configuration.
• Adjustable Input Gain Sensitivity: Match the amp's input to any head unit for optimal signal level.
• 2CH/4CH Zone Controls: Flexible zone switching for multi-zone marine audio setups.
• True Audio Volume Control: Adjust output level with precision from the amp or remote.
• Thermal/Overload & Speaker Short Protection: Built-in protection circuits keep the amp and your speakers safe.
• LED Power & Protection Indicators: At-a-glance status monitoring for quick diagnostics.
• Soft Turn-On Circuit: Eliminates power-on pop for a clean, professional installation.
• Stainless Steel Screws & Metal Mounting Feet: Durable hardware built for marine environments.

Power Specifications

• RMS @ 2 Ohm (14.4V): 125W x 4
• RMS @ 4 Ohm (14.4V): 80W x 4
• Total Max Power: 500W
• Fuse Rating: 30A x 2
• THD: < 0.05%
• SNR: > 96dB

Dimensions

• 8.25" W x 1.9" H x 7.3" D (210mm x 48mm x 185mm)

Why the Cadence SQA500.4?

This marine amplifier is the smart choice for boat owners, Jeep builds, and anyone who needs a 4-channel amp that can handle moisture, salt air, and the elements without skipping a beat. The compact footprint fits tight installs, and the Class D efficiency keeps heat low even in enclosed spaces. Pair it with marine-rated speakers and you've got a system built to last season after season.

Professional installation available at Best Auto Sound & Security in Central Texas. Contact us to schedule your build.