ESX Quantum QE900.4 4-channel amplifier

Name: ESX Quantum QE900.4 4-Channel Amplifier | Masori
Brand: ESX
Price: 399.0 EUR
Availability: InStock
Rating: 5.0 (1 reviews)

1 Review

Max, Mikael and 53k+ customers already with Masori sound upgrade

ESX Quantum QE900.4 4-channel amplifier

1 Review

4-channel Class D amplifier, 900 watts RMS, emission-free.
Auto Turn-On, Error Protection, audiophile components, high efficiency.
Compact remote control, versatile functions, sound experience.
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€399,00

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ESXQuantum QE1000.1

FocalInside IMP-EXT150

Quantum QE900.4 by ESX

The Quantum QE900.4 is a top-class 4-channel amplifier from ESX. The amplifier belongs to the innovatively developed ESX Quantum QE series and offers many features that every audio enthusiast desires. The Class D technology, high efficiency, and audiophile-tuned components make it the first choice. Particularly noteworthy is the emission-free playback, which ensures that no disturbances affect your enjoyment of music. With its versatile functions and the included level remote control, the Quantum QE900.4 sets new standards in terms of sound experience.

Features

Advanced Class D technology with very high efficiency
Selected and audiophile-tuned components
Massive aluminum heat sink
Heavy side parts made of aluminum die-cast
High-level inputs with Error Protection System
Auto Turn-On, Start/Stop Ready
MOSFET-PWM power supply, 3-fold protection circuit
Compact bass cable remote control
4-Channel Class D Digital Amplifier
900 Watt RMS output power

Data

4 x 150/225 Watt RMS @ 4/2 Ohm
2 x 450 Watt RMS @ 4 Ohm bridged
HP 50-5000 Hz (CH1/2), HP 10-500 Hz (CH3/4)
LP 50-5000 Hz (CH3/4), Copy Mode CH3/4 > CH1/2
Bass Boost 0-12 dB, Bandpass Mode, Input Selector Switch
High-level inputs, Automatic power-on function
Compact cable remote control for bass level
Dimensions 280 x 46 x 165 mm
Efficiency up to 84%

ESX Quantum QE900.4 Datenblatt

Datenblatt öffnen

Frequent questions about Quantum QE900.4

Was macht den Quantum QE900.4 so besonders im Verstärkerbereich?

The Quantum QE900.4 from ESX stands out due to its advanced Class D technology and very high efficiency, maximizing performance while minimizing energy consumption. With audiophile-tuned components, this amplifier guarantees sound reproduction that is free of interference and emissions. These aspects make it an excellent choice for any audio enthusiast who values pure listening pleasure. Additionally, the massive aluminum heat sinks and the heavy die-cast aluminum side panels not only ensure durability but also provide optimal heat exchange. With its 4-channel design, the amplifier can power multiple speakers, personalizing the sound experience.

Wie hoch ist die Ausgangsleistung des Quantum QE900.4?

The ESX Quantum QE900.4 offers an RMS output power of 900 watts, which can be used in various configurations. It provides 4 x 150 watts RMS at 4 ohms or 4 x 225 watts RMS at 2 ohms. In bridged operation, the amplifier delivers 2 x 450 watts RMS at 4 ohms, making it particularly suitable for high-power subwoofer applications. This flexible power output makes it ideal for demanding sound applications where both precision and power are required. The adaptability to different ohm values allows the amplifier to be used efficiently and versatilely in various audio environments.

Welche Schutzmechanismen bietet der Quantum QE900.4?

The Quantum QE900.4 is equipped with a triple protection circuit that offers various safety features. This protection circuit ensures that the amplifier is comprehensively protected against overload, overheating, and short circuits. Especially in intense audio applications where the amplifier must consistently deliver high power, the protection circuit can prevent unforeseen damage. Additionally, the amplifier features an Error Protection System at the high-level inputs, which also ensures trouble-free operation. These safety measures are crucial to securing the longevity and reliability of the amplifier, especially in demanding environments.

Welche Frequenzweichen-Optionen bietet der Quantum QE900.4?

The Quantum QE900.4 from ESX offers versatile crossover options. It features a high-pass (HP) and a low-pass (LP) filter that can be applied to different channels. For channels 1 and 2, the high-pass is adjustable from 50 to 5000 Hz, while for channels 3 and 4 it ranges from 10 to 500 Hz. The low-pass for channels 3 and 4 ranges from 50 to 5000 Hz. These filter options allow you to perfectly tune the sound characteristics to your audio system. Additionally, the amplifier also offers a bandpass mode and a bass boost of 0 to 12 dB, further enhancing sound flexibility.

Wie ist die Kompatibilität des Quantum QE900.4 mit verschiedenen Fahrzeugen aufgrund seiner Abmessungen?

The Quantum QE900.4, with its compact dimensions of 280 x 46 x 165 mm, is designed to be easily integrated into various vehicle types without encountering space issues. These dimensions allow for flexible installation, making it suitable for both smaller and larger vehicles. Although no specific car brands are mentioned in the description, the compact size is practical for many common installation situations, such as under a seat or in a trunk, where space is often limited. The easy adaptability, combined with its performance, makes the amplifier an ideal choice for audio enthusiasts looking to upgrade sound in different vehicle models.

Welche Fernbedienungsfunktionalitäten bietet der Quantum QE900.4?

The ESX Quantum QE900.4 includes a compact cable remote control that serves to adjust the bass level. This functionality allows you to set the bass directly from the driver's seat without having to manually adjust the amplifier. This feature is particularly valuable in driving situations where a bass adjustment is needed without diverting attention from traffic. The precise control of the bass levels enables immediate sound adjustments to your personal preferences, significantly enhancing the acoustic enjoyment in the vehicle. This remote control is therefore a valuable add-on for anyone who focuses on dynamic bass adjustment.

Wie beeinflusst die Bass-Boost-Funktion das Klangverhalten des Quantum QE900.4?

The Quantum QE900.4 offers a bass boost of 0 to 12 dB, allowing for targeted enhancement of low frequencies. This feature enables audio enthusiasts to increase the bass intensity according to their personal preferences, which is particularly beneficial for music genres with strong bass lines. The bass boost can produce dynamic and powerful bass that intensifies the overall sound experience in the vehicle. Especially if you enjoy listening to music loudly and want to feel the bass, the boost provides the desired pressure increase. The ability to fine-tune the bass level allows for a customized adjustment to the specific listening environment and music piece.

Wie funktioniert die automatische Einschaltfunktion des Quantum QE900.4?

The ESX Quantum QE900.4 is equipped with an automatic turn-on function that significantly simplifies the operation of the amplifier. This function detects an incoming audio signal and automatically activates the amplifier without manual intervention. This practical feature is particularly important for increasing user comfort and simplifying the operating process, as it makes the amplifier ready for use as soon as the audio signal arrives. This not only prevents energy loss but also ensures that music playback can begin immediately. This auto turn-on function is especially effective in systems that do not have a remote line integrated for turning on the amplifier.

Welche Eingänge sind beim Quantum QE900.4 verfügbar?

The Quantum QE900.4 is equipped with high-level inputs that also feature an Error Protection System. These inputs are useful for connecting the amplifier directly to the speaker outputs of a car radio. This is particularly helpful when the car radio does not have a low-level preamp output line. The high input levels prevent distortion while ensuring clean processing of the incoming audio signals, contributing to the overall sound quality. This high-quality construction of the inputs ensures a signal that is free from interference and losses, leading to a better listening experience and maximizing the use of the Input-Equipped features.

Welche Materialeigenschaften zeichnet den Aufbau des Quantum QE900.4 aus?

The Quantum QE900.4 is characterized by its robust materials, which contribute to its reliability and durability. The amplifier features a massive aluminum heat sink, accompanied by heavy die-cast aluminum side panels, which not only ensure excellent heat dissipation but also maintain the structural integrity of the amplifier. These materials are selected to minimize vibrations while maintaining operational stability even under extreme operating conditions. The high quality of these components significantly enhances the performance and lifespan of the amplifier, making it the ideal choice for demanding applications where both performance and reliability are required.

Herstellerinformation/verantwortliche Person

Audio Design Loudspeaker Sales GmbH
Am Breilingsweg 3
76709 Kronau
Germany

Authorized Managing Director:
Bruno Dammert

Contact: info@audiodesign.de

Let customers speak for us

from 9062 reviews

Franco

Super guter Subwoofer

Super Subwoofer mit extrem tiefem Bass. Die Kabel sind dick und hochwertig verarbeitet. Es gibt nichts zu beanstanden. Absolut empfehlenswert.

CBP1000

12/09/2025

Jean François Tedesco

Alpine tube 12 bazooka , Un sacré caisson de basses ,

Un sacré caisson de basses , j'ai eu un 46 cm killer 454 de l'époque année 90 , qui tapait vraiment bien , mais ce tube est bien plus fort et plus ample, toutes les basses passent sans problème, avec une télécommande à réglage multiples taramps eq bass , et un ampli Machete de masori , le couple est parfait, personnellement j'en ai deux tubes et ça donne énormément, avec l'ampli 2 x 530 en 4 ohms . Parfois le plus simple est bien meilleur et plus durable .

SWT-12S4

11/29/2025

Bartosz Erber

X-10 v3 d2

Hallo. Sehr freundlicher Kundenservice und schnelle Auftragsabwicklung. Der Lautsprecher ist brandneu und unbenutzt. Ich habe ihn vor einiger Zeit gekauft, aber erst kürzlich das Gehäuse fertiggestellt. Die Parameter entsprechen den Herstellerangaben: 42,5 Liter Nettovolumen, abgestimmt auf 32 Hz und 21 mm starkes Sperrholz. Ich hatte noch nie einen 10-Zoll-Lautsprecher und wusste nicht, was mich erwartet, aber das Ergebnis hat meine kühnsten Erwartungen übertroffen. Der Bass aus einem so kleinen Lautsprecher in einem so kleinen Gehäuse ist einfach unglaublich. Um den X-10 zu kaufen, habe ich meinen DD 712f in einem 70-Liter-Gehäuse verkauft, und der war ein Volltreffer. Der Sundown ist in jeder Hinsicht besser. Ich kann diesen Lautsprecher und den Händler, bei dem ich ihn gekauft habe, wärmstens empfehlen. Beste Grüße.

X10 v3

11/18/2025

tatazz

Est arrivé à la maison très rapidement

Est arrivé à la maison très rapidement 👌🏽

Hydrogen GZHW 25XSPL

11/13/2025

Anonym

.

Geht echt gut und leicht zum einstellen

GPX2200.1D

11/12/2025

Georges, Alexander, Vainohoarii NAGLE

Très satisfaisant.

Bonjour, je reçu le colis bien emballé.
Je recommande vivement, la livraison est gratuite et rapide, je recommanderai sûrement encore chez Masori.

RS-YS12

11/10/2025

SPYRIDON D.

Bought again

Bought again. Great price, fast delivery, nice !

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11/06/2025

Arthur Mol

Perfect sound, I bough 2 pairs for the door and

Perfect sound, I bough 2 pairs for the door and the difference between these and the stock ones are huge

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christopher Martinez

Deaf bonce

Très bonne qualité
Envoie rapide et soigné
Je recommande

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Nice

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Preis/Leistung Qualität top!

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Anonym

Top Upgrade für Canton System

Ich habe den Woofer in meinem Skoda Octavia 3 mit Canton Soundsystem eingebaut.
Der Einbau war Plug & Play, alles passt perfekt ohne Anpassungen.
Im Vergleich zum originalen Canton Subwoofer spielt dieser deutlich stärker, präziser und mit mehr Druck.
Ich kann den Woofer jedem empfehlen, der mehr Bass aus dem Canton-System herausholen möchte – lohnt sich absolut!

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