If you’re upgrading your vehicle’s sound system and want clear, balanced power across every speaker, the Memphis MJP800.4 car amplifier is your perfect solution. Built to deliver high-quality audio across four channels, this full-range amplifier adds volume, depth, and detail to your entire soundstage.
Whether you're powering door speakers, tweeters, or rear fills, the MJP800.4 ensures clean amplification with precision control. It’s the ideal choice for audiophiles who want better sound without losing reliability or efficiency.
⚡ Four Channels of Pure, Clean Power
The MJP800.4 delivers powerful performance in a compact, durable chassis. With 800 watts RMS of total power, this car amplifier easily drives four speakers with balanced clarity and minimal distortion. Thanks to its Class D design, it runs cool and efficient, even during extended listening sessions.
The amplifier is stable at 4 and 2 ohms and supports bridged configurations, making it highly flexible for multi-speaker and component setups. You’ll experience rich midrange and crisp highs across every listening level.
Power ratings:
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125W x 4 @ 4 ohms
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200W x 4 @ 2 ohms
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400W x 2 bridged @ 4 ohms
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Total 800 watts RMS output
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Class D technology for improved efficiency and cooler operation
🎛️ Flexible Tuning and Configuration Options
Audio control matters, and the MJP800.4 gives you full flexibility. Each pair of channels features independent high-pass and low-pass crossover settings, so you can tailor the frequency range to match your speaker setup. You’ll be able to filter out unwanted frequencies and protect your smaller drivers while maximizing performance.
The built-in signal sensing input allows seamless integration with factory radios, making it easy to upgrade any vehicle—new or old.
Control features:
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Variable high-pass and low-pass filters (50Hz–250Hz)
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Bridgeable channels for subwoofer or component speaker configurations
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Signal-sensing auto turn-on for factory system compatibility
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Balanced input for reduced noise and clean sound delivery
🧰 Built Tough and Compact for Easy Install
This car amplifier fits almost anywhere in your vehicle thanks to its compact design. It’s crafted with a brushed aluminum chassis that looks sleek and resists heat buildup. The oversized terminals make wiring secure and easy, while the LED-lit Memphis logo adds a professional, polished touch.
It’s engineered for daily driving use, with enough durability to handle bumpy roads and variable temperatures without performance loss.
Design and durability highlights:
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Compact footprint for under-seat or trunk installs
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Rugged aluminum casing with integrated heat management
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LED-illuminated Memphis badge for visual appeal
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Heavy-duty terminals for power and speaker connections
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Mounting hardware included for secure fit
🔗 Complete Your Audio Build with Confidence
Pair the MJP800.4 with full-range speakers or component systems to unlock their full potential. It can run four channels of mids and highs or be bridged for subwoofer support. It’s versatile enough for nearly any audio system upgrade.
Browse more options in our full car amplifier collection to find exactly what your system needs.
Also, consider upgrading your ride’s style and comfort with car window tinting services. Tinting reduces sun glare, blocks UV rays, and gives your vehicle a sleek, finished appearance.
📍 Professional Help at Audio Jam
Need assistance selecting the right speakers or installing your new amplifier? Visit Audio Jam in Wilmington, Delaware. Our experts will help you design and install the perfect system, customized to your driving and listening style.
📍 Audio Jam
2028 W Newport Pike, Wilmington, DE 19804
📞 (302) 999-9840
🌐 www.audiojamonline.com
❓ Frequently Asked Questions
Q1: Can I use the MJP800.4 with my factory stereo?
Yes, this amplifier includes signal-sensing turn-on for easy integration with most factory systems.
Q2: Is it possible to bridge channels for more power?
Yes. You can bridge it to run two channels at 400W each for high-power component speakers or subwoofers.
Q3: Does this amp require a separate bass knob?
This model doesn’t include a remote bass knob, but you can adjust gain and crossover settings directly on the amp.
