Punch Marine 400 Watt 4-Channel Amplifier

Name: Punch Marine 400 Watt 4-Channel Amplifier
Brand: Rockford Fosgate
SKU: SKU-259865-default
Price: 646.79 USD
Availability: InStock
Rating: 5.0 (5 reviews)

Punch Marine 400 Watt 4-Channel Amplifier - Main image

$646.79 ~~$979.99~~ In stock

Category: Rockford Fosgate

The PM400X4 is a 400 Watt 4-channel amplifier with high dynamic power using Class-A/B technology and a conformal coated pc board designed for motorsport and marine applications.

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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Customer Reviews (5.0 / 5 · 5 reviews)

Adam S. ★★★★★ Aug 24, 2026

Installed this in my boat’s console and the Class-A/B output stays clean even when the engine’s running, no distortion at higher volumes. The conformal coating gives me peace of mind against the salt spray, and the 400 watts fills the cockpit nicely.

Thomas ★★★★★ Aug 23, 2026

The conformal coated board was the main reason I picked this over cheaper options, and after a season of salt spray and humidity, it still looks brand new inside. Class A/B power gives it that punchy, clean output at low volume too, which my cabin speakers really appreciate.

Madison ★★★★★ Aug 23, 2026

Installed this in my boat’s console last weekend and it’s been running flawlessly through some choppy rides. The Class-A/B circuitry keeps the sound clean even at higher volumes, and that conformal coating is a lifesaver for peace of mind with all the salt spray.