NEXO NXAMP 4×4 MK1 Professional Amplifier – Powerful Four-Channel Sound System Control

Professional Amplification and Digital Loudspeaker Management

The NEXO NXAMP 4×4 MK1 is a professional powered TDcontroller that combines four-channel amplification with integrated digital signal processing and loudspeaker management. Developed for demanding professional sound reinforcement applications, it provides amplification, system configuration, processing and protection features in a single rack-mounted unit.

For sound rental companies, concert production businesses, touring engineers and professional audio installers, the NEXO NXAMP 4×4 MK1 is a practical solution for compatible NEXO loudspeaker systems. By integrating amplification and loudspeaker processing, it reduces the need for separate amplifier and controller equipment and provides a centralized approach to system management.

This unit is offered in excellent condition at €2,500 each, making it an attractive option for professionals looking to expand their existing NEXO equipment inventory or acquire a dedicated amplifier controller for a compatible sound system.

Four Powerful Amplifier Channels

The NEXO NXAMP 4×4 MK1 features four independent amplification channels, with pairs of channels capable of bridge operation when configured appropriately. Its high-output architecture is designed for professional loudspeaker applications that demand substantial power and precise system control.

According to NEXO’s published specifications, the NXAMP 4×4 delivers up to 1,900 watts per channel into 8 ohms, 3,300 watts per channel into 4 ohms, and 4,000 watts per channel into 2 ohms in four-channel operation. These figures illustrate its capability for demanding professional sound reinforcement applications.

Actual performance depends on the load, operating configuration, electrical supply and manufacturer’s specified conditions. Buyers should always match the amplifier settings to the connected loudspeakers and follow the relevant system documentation.

Integrated Digital Signal Processing

A key advantage of the NEXO NXAMP 4×4 MK1 is its integrated digital signal processing. Rather than relying solely on external processing equipment, the controller incorporates dedicated DSP resources for loudspeaker optimization, crossover management and protection.

The processor is designed to work with supported NEXO loudspeaker configurations, allowing users to select suitable cabinet setups and operating modes through the front-panel interface. Depending on the supported system, configuration options can include passive or active operation, crossover selection and directional subwoofer modes.

This integrated approach helps simplify equipment racks and reduces the need for additional signal-processing units. It is especially valuable for rental companies and production teams that regularly deploy compatible NEXO systems.

Designed for Concerts, Touring and Live Events

The NEXO NXAMP 4×4 MK1 is intended for professional environments where consistent sound reinforcement and system protection are important. Potential applications include concerts, touring productions, festivals, corporate events, theatres and permanent installations using compatible NEXO loudspeakers.

For touring professionals, combining amplification and loudspeaker processing in one rack-mounted unit can simplify transport and setup. For installation specialists, the controller’s configuration and monitoring capabilities can support organized system deployment and ongoing operation.

Correct loudspeaker selection, amplifier configuration, crossover settings and system tuning remain essential to achieving the intended performance.

Connections, Monitoring and System Control

The NXAMP 4×4 MK1 includes four balanced analogue XLR inputs, signal-link connections and four Neutrik speakON loudspeaker outputs. It also provides an RS-232 connection for firmware updates and accessories, a GPIO interface for external control and monitoring, and an expansion slot for compatible digital audio and network cards.

Its front panel features a display, navigation controls, channel selection and mute buttons, alongside indicators for power, standby, amplifier protection and channel status.

These features allow technicians to configure the controller and monitor important operating conditions directly from the unit. Optional network connectivity depends on the installed expansion card and the specific system configuration.

Professional Protection and Reliability

The NXAMP platform incorporates NEXO’s proprietary loudspeaker management technology, including monitoring and protection functions designed to help safeguard both the amplifier and connected loudspeakers.

For professional users, these functions are important when operating systems under demanding conditions. Nevertheless, correct setup is essential: the selected cabinet presets, wiring, load impedance and amplifier configuration must match the connected equipment.

The NXAMP 4×4 MK1 is particularly appropriate for buyers who already use compatible NEXO loudspeakers and want amplification and processing tailored to that ecosystem.

Price and Purchasing Information

The NEXO NXAMP 4×4 MK1 is available for €2,500 per unit and is described by the seller as being in excellent condition.

Before purchasing, confirm availability, the unit’s operating status, the mains voltage version, firmware, included accessories and any installed digital network cards. For used equipment, inspect the display, controls, connectors, cooling system and amplifier protection indicators.

If you operate a compatible NEXO sound system and need a professional four-channel amplifier controller with integrated DSP, the NEXO NXAMP 4×4 MK1 is a strong option to consider for your audio inventory.

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