MARINE AUDIO
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Marine Audio Built for Boats. Tuned by Down4Sound.
Waterproof. Saltproof. Loud AF. Our marine audio systems are made to survive the elements and still hit hard. Whether you’re ripping waves or parked at the dock, this gear delivers clean highs and deep bass — rain or shine.
What is marine audio — and where can it be used?
Marine audio is built for anything that gets wet, loud, or wild. Jet ski? ✅ Boat? ✅ Jeep? ✅ Side-by-side? ✅ Motorcycle? ✅ RV? ✅ If it moves, shakes, or splashes — this gear fits.
Shop speakers, amps, subs and full systems made for outdoor power and all-day performance. Tested in real-world conditions. Trusted by serious riders. Scroll up and build your setup today.
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DOWN4SOUND CFX-PROx104H - 10" Carbon Fiber NEO 2-Way Full Range Pro Audio Water Resistant Coaxial Speaker - 250W RMS, 4 Ohm
Down4Sound
MSRP: ¥53,034¥28,726Elevate your audio experience with the DOWN4SOUND CFX-PROx104H, a 10-inch carbon fiber 2-way full-range pro audio coaxial speaker. Meticulously engineered for audiophiles seeking unparalleled sound quality, this speaker boasts a robust 250W RMS power...CFX-PROx104HMSRP: ¥53,034¥28,726 -
DOWN4SOUND Hexicone NEO HexiPRO 100 CS8 All SZN - 10" Carbon Fiber Pro Audio Speaker - 400W RMS, 8 Ohm
Down4Sound
¥19,887Key Features: Neodymium Magnet Technology: Lightweight and efficient, the neodymium magnet delivers exceptional sound clarity and dynamic range, enhancing audio performance. All-Weather Resilience: Marine-grade construction protects against UV rays,...PRO100NEO0008¥19,887 -
DOWN4SOUND CFX-PROx658H - 6.5" Carbon Fiber NEO 2-Way Full Range Pro Audio Water Resistant Coaxial Speaker - 200W RMS, 8 Ohm
Down4Sound
MSRP: ¥34,251¥19,335Upgrade your audio system with the DOWN4SOUND CFX-PROx658H, a 6.5-inch carbon fiber NEO 2-way full-range pro audio coaxial speaker. Engineered for exceptional sound quality, this speaker features a 200W RMS power rating and an 8 Ohm impedance. With a...CFX-PROx658HMSRP: ¥34,251¥19,335 -
DOWN4SOUND EZY BT2HD – APTX-HD Bluetooth 5.0 High-Resolution Audio Receiver ( Works with iPhone and Android)
Down4Sound
MSRP: ¥16,572¥8,838Engineered for Automotive, Marine, and Powersports Use The D4S EZY BT2HD is a high-definition Bluetooth 5.0 audio receiver built around the Qualcomm® QCC3034 chipset with support for APTX-HD. Designed for clear, distortion-free playback, it delivers...EZY BT2HDMSRP: ¥16,572¥8,838 -
DOWN4SOUND Hexicone PRO 100 SS8 All SZN - 10" Carbon Fiber Pro Audio Speaker - 300W RMS, 8 Ohm
Down4Sound
MSRP: ¥12,153¥11,048Introducing the Down4Sound Hexicone PRO 100 SS All SZN, a formidable 10-inch Pro Audio Speaker that redefines the boundaries of sound technology. This speaker is not merely an improvement—it's a total revolution. Crafted with an advanced carbon...PRO100SS0008MSRP: ¥12,153¥11,048 -
DOWN4SOUND CFX-PROx808H - 8" Carbon Fiber NEO 2-Way Full Range Pro Audio Water Resistant Coaxial Speaker - 200W RMS, 8 Ohm
Down4Sound
MSRP: ¥41,985¥23,202Enhance your audio setup with the DOWN4SOUND CFX-PROx808H, an 8-inch carbon fiber NEO 2-way full-range pro audio coaxial speaker. This speaker is meticulously engineered to deliver outstanding sound quality, featuring a robust 200W RMS power handling and...CFX-PROx808HMSRP: ¥41,985¥23,202 -
DOWN4SOUND CFX-PROx108H - 10" Carbon Fiber NEO 2-Way Full Range Pro Audio Water Resistant Coaxial Speaker - 250W RMS, 8 Ohm
Down4Sound
MSRP: ¥53,034¥28,726Elevate your audio experience with the DOWN4SOUND CFX-PROx108H, a 10-inch carbon fiber 2-way full range pro audio coaxial speaker, meticulously engineered for audiophiles seeking unparalleled sound quality. With a robust 250W RMS power handling and an 8...CFX-PROx108HMSRP: ¥53,034¥28,726 -
DOWN4SOUND M3-1004 (MARINE) - BLACK GLOSS | 700W RMS
Down4Sound
¥27,622 - ¥33,145The DOWN4SOUND M3-1004 (MARINE) is a compact powerhouse delivering 700W RMS of clean, efficient Class D sound, engineered for serious marine and off-road use. Wrapped in a rugged chassis built for extreme environments, this amplifier features...M3-1004-BKG-¥27,622 - ¥33,145 -
DOWN4SOUND M3-1004 (MARINE) - BLUE GLOW | 700W RMS
Down4Sound
¥27,622 - ¥33,145The DOWN4SOUND M3-1004 (MARINE) is a compact powerhouse delivering 700W RMS of clean, efficient Class D sound, engineered for serious marine and off-road use. Wrapped in a rugged chassis built for extreme environments, this amplifier features...M3-1004-BLGL-¥27,622 - ¥33,145Qty in Cart: 0Quantity:Price:¥27,622 - ¥33,145Subtotal: -
DOWN4SOUND M3-1004 (MARINE) - GREEN GLOW | 700W RMS
Down4Sound
¥27,622 - ¥33,145The DOWN4SOUND M3-1004 (MARINE) is a compact powerhouse delivering 700W RMS of clean, efficient Class D sound, engineered for serious marine and off-road use. Wrapped in a rugged chassis built for extreme environments, this amplifier features...M3-1004-GRGL-¥27,622 - ¥33,145 -
DOWN4SOUND M3-1004 (MARINE) - ORANGE GLOW | 700W RMS
Down4Sound
¥27,622 - ¥33,145The DOWN4SOUND M3-1004 (MARINE) is a compact powerhouse delivering 700W RMS of clean, efficient Class D sound, engineered for serious marine and off-road use. Wrapped in a rugged chassis built for extreme environments, this amplifier features...M3-1004-ORGL-¥27,622 - ¥33,145 -
DOWN4SOUND M3-1004 (MARINE) - WHITE GLOSS | 700W RMS
Down4Sound
¥27,622 - ¥33,145The DOWN4SOUND M3-1004 (MARINE) is a compact powerhouse delivering 700W RMS of clean, efficient Class D sound, engineered for serious marine and off-road use. Wrapped in a rugged chassis built for extreme environments, this amplifier features...M3-1004-WHG-¥27,622 - ¥33,145