Description
Memphis Audio • MX Powersports Amplifiers
Memphis Audio MX400.4 – Powersports 4-Channel Amplifier
Memphis MX powersports amplifiers are designed with side-by-side and powersports applications at their core. The MX400.4 delivers strong multi-channel power in an ultra-compact, weather-resistant chassis, making it an ideal solution for limited-space installations that demand reliable performance in harsh environments.
4-channel powersports amplifier
IP66 rated water resistant
Compact chassis design
Conformal coated circuit board
Top mounted controls
Sealed connectors
Overview
Built for Powersports Environments
The MX400.4 is engineered to deliver dependable power in off-road and marine-style environments. An IP66 rated enclosure, conformal coated boards, and sealed connectors help protect against water, dust, and the elements, while the compact footprint allows easy installation in tight spaces.
- Designed specifically for powersports and side-by-side systems
- Water and element resistant construction
- Compact size for limited mounting locations
Features & Control
Simple Tuning, Secure Design
- Compact amplifier design
- Conformal coated board for added durability
- IP66 rated water and element resistance
- Top mounted controls with protective cover
- Fixed 80Hz crossover (MX400.4)
- High / low level input compatibility
- 2 / 4 input switch (MX800.4 / MX400.4)
- Sealed connectors
Technical Specifications
| Model | MX400.4 |
| RMS Power @ 4Ω | 75W x 4 |
| RMS Power @ 2Ω | 100W x 4 |
| Bridged Power @ 4Ω | 200W x 2 |
| Total Harmonic Distortion | <1% @ 4Ω |
| Frequency Response | 10Hz – 20kHz |
| Input Range | 300mV – 9.7V |
Physical Specifications & Installation
| Dimensions (L x W x H) | 8.75" x 3.25" x 1.75" |
| Recommended Amp Kit | 8GKIT |
Install Tip:
Use the recommended 8GKIT wiring kit to support proper power delivery and reliable amplifier operation.
Use the recommended 8GKIT wiring kit to support proper power delivery and reliable amplifier operation.
Specifications and features are based solely on the provided product data and may be subject to change.
Used Frequently Asked Questions
- What does used mean? Used products may be unused customer returns that are essentially "new" items, or they may be previously installed products that were returned under warranty or during our return policy period.
- What is the warranty? All of our used items come with a 90-day warranty.
- What's it look like? All of our used items are inspected and graded by our returns team at our facilities. They will test them and grade them to one of four standard gradings: Used Open Box, Used Very Good, Used Good, and Used Acceptable. Please see the following descriptions of each grade - also note that if an item falls under ANY of the criteria for a certain grade, even though the rest of the product is better, we will give it the lowest grade.
- Used Open Box An item in perfect working condition. Original protective wrapping may be missing, but the original packaging is intact and in good condition with minor damage possible. Instructions are included.
- Used Very Good A well-cared-for item with limited use, remains in good working condition. The item may show some limited signs of wear,small scratches,cosmetic blemishes. Item may arrive with damaged packaging or be repackaged and could be missing some accessories.
- Used Good The item shows wear from use, remains in good condition and functions properly. May have damaged packaging or be repackaged. It may be marked, have identifying markings on it, have minor cosmetic damage. It may be missing some parts or accessories.
- Used Acceptable The item is fairly worn but continues to function properly. While repackaged; signs of wear can include aesthetic issues; scratches, dents. The item may have markings on it or show signs of previous use. Item may be missing some parts or accessories.
- Have more questions? Call us, send us a chat, or an email. We'll be able to answer any additional questions you may have.