---
product_id: 427611681
title: "KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier"
brand: "kenwood"
price: "$316.99"
currency: USD
in_stock: true
reviews_count: 13
category: "Kenwood"
url: https://www.desertcart.us/products/427611681-kac-m1814-4-channel-compact-bridgeable-marine-motorsports-400w-max
store_origin: US
region: United States of America
---

# 400W max power output 2 ohms load capability for marine use 4-channel bridgeable design KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier

**Brand:** kenwood
**Price:** $316.99
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your ride with compact, marine-ready audio brilliance!

## Quick Answers

- **What is this?** KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier by kenwood
- **How much does it cost?** $316.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/427611681-kac-m1814-4-channel-compact-bridgeable-marine-motorsports-400w-max)

## Best For

- kenwood enthusiasts

## Why This Product

- Trusted kenwood brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Delivers up to 400W max power in a sleek, space-saving design perfect for tight installations.
- • **Smart Signal Sensing:** Speaker level input with signal sensing turn-on ensures seamless, energy-efficient operation.
- • **Marine-Grade Durability:** Built with protective coating and 2 ohm load support to withstand harsh marine and motorsports environments.
- • **Precision Audio Control:** High Pass Filter adjustable from 50Hz-200Hz lets you fine-tune your sound for crystal-clear highs and mids.
- • **Versatile 4-Channel Bridgeable Amp:** Customize your sound setup with flexible channel bridging for tailored audio performance.

## Overview

The Kenwood KAC-M1814 is a compact, 4-channel digital amplifier delivering up to 400 watts max power. Designed for marine and motorsports use, it features a durable protective coating, 2 ohm load capability, and flexible bridging options. With speaker level input and signal sensing turn-on, plus adjustable high pass filtering, it offers professional-grade sound tuning in a space-saving form factor.

## Description

Digital Amplifier Technology Speaker Level Input w/ Signal Sensing Turn-on 2 Ohms Load Capability Power MOS-FET Switching Power Supply 1m (3.3ft) RCA Cable

Review: Big sound, small size! - I've had 200+ watt Pioneers installed for about a year with a Kenwood head unit, sometimes when playing content from my phone I really had to crank the volume up to hear it well enough. Now with this amp connected, I barely need to go above 25% and it has fantastic audio quality. I've added the Kenwood compact sub to my setup so the Pioneers handle the mids and highs (and some low Hz), the compact sub handles the lows - all setup using the crossover in the head unit. You really have to tune your setup if you expect this to sound good - go through your head unit settings, set the speaker size, distance, etc... Don't leave everything to default. I set the line sensitivity at about .3 (which is about 65-75% turning of the dial). HPF off so I can change settings on the fly at the head unit. Oh and the size - this thing is so compact, I was able to tuck it under the dash behind the 'ol glovebox. Everything you need is included, RCA cables, wiring harness, even some zip ties. Like I said, when you tune it against the settings in your head unit, the audio quality is fantastic.
Review: Perfect fit. Great quality. Great value. - Perfect fit. Great quality. Great value.

## Features

- Digital Amplifier Technology
- Speaker Level Input w/ Signal Sensing Turn-on
- 2 Ohms Load Capability. High Pass Filter : 50Hz-200Hz, -12dB/oct (A/B)
- Power MOS-FET Switching Power Supply
- 1m (3.3ft) RCA Cable

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B097DGV7FG |
| Best Sellers Rank | #24,837 in Electronics ( See Top 100 in Electronics ) #6 in Marine Amplifiers |
| Brand | Kenwood |
| Date First Available | February 20, 2019 |
| Global Trade Identification Number | 00019048226358, 00019048227133 |
| Item Weight | 1.5 pounds |
| Item dimensions L x W x H | 8.5 x 3 x 7 inches |
| Item model number | KACM1814 |
| Manufacturer | Kenwood |
| Material | Plastic, Protective Coating |
| Mounting Type | Boat Mount |
| Number of Channels | 4 |
| Output Power | 400 Watts |
| Package Type Name | Box |
| Product Dimensions | 8.5 x 3 x 7 inches |
| UPC | 019048227133 019048226358 |
| Voltage | 14.4 Volts |

## Product Details

- **Brand:** Kenwood
- **Item dimensions L x W x H:** 8.5 x 3 x 7 inches
- **Manufacturer:** Kenwood
- **Mounting Type:** Boat Mount
- **Voltage:** 14.4 Volts

## Images

![KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier - Image 1](https://m.media-amazon.com/images/I/71FANe4bUgL.jpg)

## Questions & Answers

**Q: Will this pair well with model KMMBT31BU?**
A: I am not a professional, but I have worked with home, car, and venue audio for over 25 years.  I say they will make a great pair.  If that head end has the features you want, then this little amp will give 100w max watts per channel over the 50w onboard.  It can pump out a very reasonable volume level with plenty left over so that the sound doesn't get distorted.  In fact, I wouldn't recommend getting anything more powerful unless you replace the speakers too.

**Q: Does it come with the harness pigtails?**
A: Yes and the RCA cables. Pretty complete. You will need a y connector on the RCA input side if you want to bridge the amp.

**Q: How many rms per channel**
A: 45 watts x 4

**Q: Ohm stability?Rms ratings @ ohm loads ?**
A: 4ohm

## Customer Reviews

### ⭐⭐⭐⭐⭐ Big sound, small size!
*by I***N on June 2, 2024*

I've had 200+ watt Pioneers installed for about a year with a Kenwood head unit, sometimes when playing content from my phone I really had to crank the volume up to hear it well enough. Now with this amp connected, I barely need to go above 25% and it has fantastic audio quality. I've added the Kenwood compact sub to my setup so the Pioneers handle the mids and highs (and some low Hz), the compact sub handles the lows - all setup using the crossover in the head unit. You really have to tune your setup if you expect this to sound good - go through your head unit settings, set the speaker size, distance, etc... Don't leave everything to default. I set the line sensitivity at about .3 (which is about 65-75% turning of the dial). HPF off so I can change settings on the fly at the head unit. Oh and the size - this thing is so compact, I was able to tuck it under the dash behind the 'ol glovebox. Everything you need is included, RCA cables, wiring harness, even some zip ties. Like I said, when you tune it against the settings in your head unit, the audio quality is fantastic.

### ⭐⭐⭐⭐⭐ Perfect fit. Great quality. Great value.
*by J***O on December 26, 2025*

Perfect fit. Great quality. Great value.

### ⭐⭐⭐⭐⭐ Good Compact Car Speaker Amp
*by L***M on July 5, 2025*

Why did you pick this product vs others?: Have several of these in various vehicles. Compact size easily fits under larger center consoles and car seats with air space for cooling. Class D amp with 15A fuse, so low power consumption. Provides good clear amplified sound for car door and dash speakers. Gains adjusted near mid position, crossovers at 80Hz. Using separate dedicated mono amps for subwoofers. Not a competition or audiophile amp, but seems solid for a daily driver.

## Frequently Bought Together

- Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier
- BOSS Audio Systems KIT2 8 Gauge Complete Car Amplifier Installation Wiring Kit with Power Cables, Ground Cables, Turn-On Wire, Speaker Wire, Terminals
- DteeDck RCA Splitter 1 Female to 2 Male, 2 Pack - RCA Audio Video Cable Splitter Adapter, Dark Blue

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/427611681-kac-m1814-4-channel-compact-bridgeable-marine-motorsports-400w-max](https://www.desertcart.us/products/427611681-kac-m1814-4-channel-compact-bridgeable-marine-motorsports-400w-max)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-03*