ESX SXE250.4 – four-channel amplifier

Description

ESX SIGNUM SXE – a new generation of sound power and precision

ESX SIGNUM SXE series is a development of the incredibly successful HORIZON HXE , but has been completely redesigned to enhance both sound and build quality. ESX designers have meticulously considered every detail – from the use of select audiophile components, through the reinforced chassis, to the advanced features that integrate the amplifier with factory vehicle systems.

The new SIGNUM SXE models feature massive connection terminals , solid aluminum side panels , and a durable, precision-finished housing with a built-in acrylic ESX logo. These devices are designed for users who value both power and sound clarity, as well as aesthetics and reliability.

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Excellent sound quality thanks to audiophile-grade components

SXE series amplifiers utilize high-quality NE5532 operational amplifiers in the input section, delivering exceptional audio resolution across the entire frequency range and minimal harmonic distortion .
This results in a clear, dynamic, and natural sound—from subtle highs to deep, controlled bass.

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Integration with factory systems – functionality without compromise

One of the key new features of the SIGNUM SXE series is the Hi-Level Input .
This allows the amplifier to be connected to a factory headunit without RCA outputs , significantly simplifying integration with the vehicle's original audio system.
The signal is fed directly from the speaker wires, and the Auto Turn-On allows for hassle-free operation without the need for additional REM cables.

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EPS System – Intelligent Error Protection

The innovative EPS (Error Protection System) is a safety system that prevents interference and errors in communication with the vehicle's electronics.
This ensures that when the amplifier is connected, there are no disruptions to the factory on-board equipment no diagnostic errors are stored in the vehicle's computer memory .
This solution is particularly important in modern vehicles with advanced electronics.

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Flexible configuration and precise sound control

Each SIGNUM SXE series amplifier is equipped with advanced crossover filters that allow for perfect adjustment to the type of speakers connected.
Users can easily set the appropriate cutoff frequencies for bass, midrange, or tweeters, achieving optimal sound characteristics depending on the system configuration.

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A design that inspires with quality

• Massive aluminum housing with recessed acrylic ESX logo
• Aluminum side panels for excellent heat dissipation
• Massive connection terminals for high strength and easy access
• Bottom panel with solid mounting brackets for secure installation
• High level inputs with EPS system – no interference or errors in the vehicle
• Automatic power-on using the Hi-Level signal
• PWM MOSFET power supply with triple protection system (short circuit, overload, overheating)

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Summary

ESX SIGNUM SXE series is the perfect blend of power, quality, and technology .
Thanks to the use of modern construction solutions, precise electronics, and refined design, SXE amplifiers ensure stable, clear, and dynamic sound reproduction in all conditions.
They are the choice for anyone who expects more from their car audio system than just volume—they expect perfection.