NEXO NXAMP4X4

Proven Power and Precision: Why the NEXO NXAMP4X4 Still Dominates High-Performance Sound Systems

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NEXO NXAMP4X4

In the demanding world of professional audio, the NEXO NXAMP4X4 continues to earn its place in world-class sound systems. As one of the most powerful and reliable DSP amplifiers available, it merges cutting-edge Yamaha Class D amplification with advanced NEXO speaker processing. Whether you’re running a live event, installing in a concert hall, or managing an AV rental fleet, the NXAMP4X4 ensures that your system sounds phenomenal—day after day, show after show.

Explore configurations and availability now at SASPhonik Shop

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What Is the NEXO NXAMP4X4?

The NXAMP4X4 is a 4-channel DSP amplifier delivering massive output with crystal-clear digital signal processing. It was co-developed by NEXO and Yamaha, blending high-efficiency Class D power with robust speaker management. Designed for seamless integration with all NEXO loudspeaker systems, this unit offers plug-and-play simplicity with bulletproof reliability.

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Technical Overview

• Output Power: 4 × 4,500W RMS (18,000W total)

• Speaker Load: Stable to 2Ω

• DSP: 96kHz, 64-bit floating point

• Inputs: Analog, AES/EBU, optional Dante™

• Control: Ethernet (NeMo software), RS-232

• Height: 3U rackmount

• Protection: Peak, thermal, short-circuit, overload

Because of its integrated DSP and factory-loaded speaker presets, the NXAMP4X4 allows fast deployment with no external crossover or EQ units needed.

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Why Professionals Still Choose the NXAMP4X4

Despite newer models like the MK2, the original NXAMP4X4 continues to be used in prestigious venues, stadiums, houses of worship, and on global tours. Here’s why:

• Unmatched output power per channel

• Preloaded factory presets for all NEXO speakers

• Simple integration with PS, GEO, STM, Alpha, and ID Series

• Field-installable Dante card for digital audio networks

• Global compatibility with auto-voltage detection

In other words, this amp doesn’t just power your system—it protects it, tunes it, and keeps it sounding perfect from the first note to the last.

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System Compatibility

The NXAMP4X4 is optimized for:

• PS Series (PS8, PS10, PS15)

• Alpha Series (E, EM, B1, S2)

• GEO Series (S12, S8, M6, T)

• ID and STM Series

• All compatible subwoofers (RS18, LS18, B1-18, S118, etc.)

You can easily assign presets to channels using the front panel or remotely using NeMo software.

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Dante Integration (Optional Card)

With the Dante expansion, the NXAMP4X4 becomes fully digital-ready:

• Audio routing over standard Ethernet

• Simple integration with Yamaha mixers

• Full support for Dante Controller and Domain Manager

• Cleaner signal path with lower latency

• Ideal for permanent installs or touring digital setups

As a result, the NXAMP transitions smoothly into modern IP-based audio networks.

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NeMo Control and Monitoring

You can monitor and manage your system using NeMo (NEXO Monitoring), available for:

• iOS / iPad

• Mac and Windows

NeMo allows for:

• Real-time level and temperature monitoring

• Remote preset selection

• Delay, gain, EQ, limiter, and mute adjustments

• Multi-amp grouping and scene recall

This kind of control gives engineers confidence and convenience, whether they’re in the booth or walking the room.

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Common Use Cases

• Arena sound reinforcement

• Festival main stage racks

• House of worship FOH systems

• Theatre and auditorium installations

• Broadcast stage monitoring

• AV rental fleets and mobile setups

Because of its power and DSP flexibility, the NXAMP4X4 handles everything from front-of-house PA to distributed zone systems.

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Testimonials from Audio Experts

“It’s the heart of every rack we build. You power it up, load the preset, and go. No fuss, no failures.”
— Lead System Tech, Touring Company

“We’ve run NXAMP4X4s for nearly a decade without issue. The presets make every NEXO rig sing.”
— Sound Engineer, Church Install

“When paired with Dante, it becomes the perfect bridge between analog reliability and digital convenience.”
— Integrator, Live Events AV

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FAQs

Is the NXAMP4X4 still supported by NEXO?
Yes, NEXO continues to provide firmware updates, technical support, and parts for this model.

Can I use this with third-party speakers?
Technically yes, but the amp is optimized for NEXO systems with pre-tuned DSP profiles.

What’s the difference between NXAMP4X4 and NXAMP4x4 MK2?
MK2 has a touchscreen interface, faster DSP, better noise floor, and enhanced network support—but the original remains a top performer.

How loud is the fan system?
The unit includes a variable-speed fan, optimized for quiet operation during low loads and efficient cooling during high loads.

Do I need external processing?
No. The integrated DSP covers everything—crossovers, delay, gain, limiting, EQ, and speaker protection.

Is it rackmountable?
Yes, the unit is 3U and includes standard rack ears for easy installation.

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The NEXO NXAMP4X4 stands as a testament to engineering reliability, audio power, and intelligent design. Even years after its release, it continues to lead the field in performance, protection, and platform integration. Whether you’re driving a GEO line array, an Alpha point-source system, or a PS Series speaker setup, this amplifier is your trusted workhorse in the world of high-end sound.

If you want your NEXO system to sound its best, the NXAMP4X4 is not just a good choice—it’s the right one.