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KM Marine 600W 4 Channel Class D Full-Range Amplifier
48KMA6004
A 600W RMS, four-channel marine amplifier built to handle the harsh conditions on the water without compromising on sound quality.
Running a Class D power plant keeps things efficient. The built-in KickEQ™ variable bass boost adds up to 12dB of extra low end when you need it. A variable 12dB crossover lets you tune your system without extra kit. Bridge the channels and you can run up to eight speakers from a single unit.
Every KM amp is built for marine use. Conformal-coated circuit boards resist moisture and corrosion. Stainless-steel screws and marine-grade terminals handle salt air. ABYC/NMMA-compliant power connections meet recognised marine safety standards.
Features
- Class D Power Supply
- Four-Channel Amplifier With Bridging Capability
- Conformal-Coated Circuit Board
- Variable 12dB Crossover
- KickEQ™ Variable 12dB Bass Boost
- ABYC/NMMA-Compliant Power Connections
- 316L Stainless-Steel Hardware Included
Explore the full range in Amplifiers.
Specification
| RMS Power @ 14.4V | 75W x 4 @ 4Ω / 150W x 4 @ 2Ω / 300W x 2 @ 4Ω Bridged |
|---|---|
| Output Channels | 4 |
| Voltage (V) | 12 |
| Class | D |
| Features | KickEQ Bass Boost |
| Waterproof Rating | ASTM B117 200 hr Salt Fog Test Compliant |
| Filter | High-Pass / Low-Pass |
| Fuse Rating (A) | 80 |
| Cable Gauge (AWG) | 4 |
| Amp Turn-On | Signal Sensing / DC Offset |
| Frequency Response | (Hz) 10-20k |
| Signal-to-Noise Ratio (dB) | 95 |
| Controller | N/A |
| Input Channels | 4 |
| Input Type | High Level / Low Level |
| Input Sensitivity Low Level | 125mV-5V |
| Input Sensitivity High Level | 250mV-10V |
| Height (cm) | 5.9 |
| Width (cm) | 31.5 |
| Depth (cm) | 18.0 |
What's Included
- Kicker 48KMA6004
Kicker
About the Kicker 48KMA6004
From our tech experts at CEN
A marine-rated amplifier, 4 channel, rated at 600w RMS, coated to cope with damp and salt air where a car amplifier would corrode.
Who it suits
Boats, ribs and open builds, and anywhere an amplifier is mounted somewhere it will get damp. Campers with outdoor speakers are an increasingly common use.
Our tech experts advise
Mount it somewhere ventilated and as dry as the boat allows, and fuse the feed at the battery. Marine wiring wants tinned cable and sealed joints. get in touch to talk through the install. See car audio installation.
Explore the full Kicker range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Kicker
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Frequently Asked Questions
Q: Will these speakers fit my car?
A: Most car speakers are standard sizes, but mounting depth and fitting rings vary by vehicle. Check the size in the Specification tab against your vehicle, or contact CEN with your registration and we will confirm fitment and any adapters or fitting kits you need.
Q: Do I need an amplifier to run these speakers?
A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.
Q: What is the difference between coaxial and component speakers?
A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.
Q: Do these come as a pair?
A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.










































