DS18 MP.4A 4-Channel Marine Amplifier
Key features
- 4-channel Class D amplification
- 40W RMS per channel at 4 ohms
- 3.5mm audio input
- Left/right RCA outputs
- 20Hz–20kHz frequency response
- 82dB signal-to-noise ratio
DS18 MP.4A 4-Channel Marine Amplifier is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Power four marine speakers from one amplifier with the DS18 MP.4A 4-channel marine amplifier. Its Class D design delivers 40W RMS per channel at 4 ohms, with a 3.5mm audio input and left/right RCA outputs.
The brushed red aluminum enclosure is IP55-rated and includes salt fog protection. Its listed dimensions help you plan a mounting location before installation.
Key Features & Benefits
- Four amplified channels: Power multiple speakers from one unit, with 40W RMS per channel at 4 ohms.
- Class D amplification: The digital amplifier design is specified at 80% efficiency at 4 ohms.
- 3.5mm audio input: Connect an audio source with a 3.5mm jack.
- Left/right RCA outputs: The amplifier provides RCA audio outputs for system connections.
- Marine-rated protection: The IP55-rated enclosure has salt fog protection for marine installation.
- Installation details: A 20A fuse, 16GA power input terminal, and power direct harness design are specified.
Technical Specifications
| Total Watts (Peak) | 480W |
|---|---|
| RMS Power @ 4 ohm | 4 x 40W |
| Frequency Response | 20Hz-20KHz |
| Signal to Noise Ratio | 82dB |
| Efficiency @ 4ohm | 80% |
| Damping Factor | 200 |
| Total Harmonic Distortion (THD) | 0.1% |
| Low Level Input Range | 2.5V (Fixed) |
| Amplifier Class | Digital (D) |
| Amplifier Type | Stereo Full Range |
| Minimum Impedance | 4 Ohm Stereo (Not Bridgeable) |
| Power Input Terminal Size | 16GA |
| Fuse Size | 20A |
| Voltage Operation | 9-15V DC |
| Thermal Protection | Yes (>75°C) |
| Body Color / Finish | Brushed Red Aluminum |
| Input Audio Connector | 3.5mm jack |
| Audio Output | Yes, RCA left and right |
| Water-Resistant Rating | IP55 |
| Salt Fog Protection | Yes |
| Power Direct Harness Design | Yes |
| Surface Mount Component Technology | Yes |
| Marine Grade Fuse Holder | Yes |
| Overall Length | 6" / 153mm |
| Overall Width | 3.66" / 93mm |
| Overall Height | 1.96" / 50mm |
| Heatsink Length | 4.72" / 120mm |
| Gross Single Unit Weight | 1.62Lb / 735g |
Why Choose This Product?
The MP.4A combines four separate amplified channels in a single marine amplifier. Its 4 x 40W RMS rating at 4 ohms gives you a clear power reference when planning a speaker system. The amplifier is not bridgeable, so plan around its stereo channel configuration.
Its specified IP55 rating and salt fog protection suit marine installation planning, while the red aluminum finish gives the enclosure a distinct appearance.
Installation & Compatibility Notes
Check the 6" / 153mm length, 3.66" / 93mm width, and 1.96" / 50mm height against your intended mounting space. The heatsink length is 4.72" / 120mm.
Plan for 9-15V DC operation, the 16GA power input terminal, and the specified 20A fuse. Match speaker impedance and crossover settings to your installation, and follow the manufacturer instructions. Keep connections protected from water. The IP55 rating does not permit intentional submersion.
Frequently Asked Questions
How much power does the DS18 MP.4A provide?
It is rated at 40W RMS per channel at 4 ohms across four channels. The listed total peak power is 480W.
Can this amplifier be bridged?
No. Its specification identifies it as 4 Ohm Stereo and not bridgeable.
What audio connections does it have?
It has a 3.5mm audio input and left/right RCA outputs.
Can the amplifier be submerged?
No. Its IP55 rating and salt fog protection do not permit intentional submersion. Keep connections protected from water.
What should I check before mounting it?
Compare the listed dimensions with your mounting space, then plan for the stated voltage, terminal, and fuse requirements.
Explore More
Shop the DS18 MP.4A at 12 Volt Outlet. Want to learn more about DS18? Explore our DS18 brand profile.
