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ESX

Quantum QM FOUR PP

4-channel amplifier

279,00€
279,00€ 279,00€
incl. VAT , possibly plus shipping

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Highlights

  • 4 x 52/90 watts RMS at 4/2 Ω, efficiency up to 86%.
  • High-level inputs, error protection system, clipping LED.
  • Heavy cast heatsink, automatic power-on function.
Seen more cheaply Personal Offer
brand: ESX
Delivery time:
Available for delivery, with you in 1-4 days
Number:
Piece
Watt RMS per channel:
90
Amplifier Type:
Class D
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279,00€
279,00€ 279,00€

The Quantum QM FOUR PP from ESX is a versatile 4-channel amplifier specifically designed for plug-and-play applications. With an efficient Class D design and compact dimensions, it delivers powerful performance of 4 x 52/90 watts RMS at 4/2 Ω. The amplifier is easy to install, provided your radio has a modern quadlock connector. Notable features include a heavy cast heat sink for optimal cooling, automatic turn-on function, high-level inputs with Error Protection System, and a compact bass level remote control. Due to its robust construction and efficiency, the Quantum QM FOUR PP is ideal for amplifying factory systems.

features

  • Adapter cable harness for Power Quadlock control units (5 m)
  • Efficient Class D amplifier with ultra-compact dimensions
  • Heavy cast heat sink with optimal cooling properties
  • Automatic power-on function
  • High-level inputs with Error Protection System (EPS)
  • Start/Stop Ready
  • Compact bass level remote control
  • Cinch Inputs & Outputs (via Molex)
  • Clipping LED

Technical Data

  • 4-Channel Class D Plug+Play Mini Digital Amplifier
  • 4 x 52/90 Watt RMS @ 4/2 Ω
  • 2 x 180 Watt RMS @ 4 Ω bridged
  • HPF/LPF 40 - 4000 Hz (CH1/2)
  • HPF/LPF 40 - 4000 Hz (CH3/4)
  • Bass Boost 0 / 6 / 12 dB (CH1/2)
  • Bass Boost 0 / 6 / 12 dB (CH3/4)
  • Input selection switch 2CH/4CH
  • Dimensions 216 x 39 x 84 mm
  • Efficiency up to 86%
The Quantum QM FOUR PP from ESX delivers an impressive performance of 4 x 52 watts RMS at 4 ohms or 4 x 90 watts RMS at 2 ohms. This 4-channel Class D amplifier is optimally designed for use in various car audio setups due to its high efficiency. Regardless of the impedance used, the amplifier always ensures powerful and consistent audio performance, which is particularly beneficial when used in factory systems. With its outstanding RMS value, the amplifier provides clear and strong audio output, guaranteeing an excellent sound experience even in loud environments.
The Quantum QM FOUR PP is designed as a plug-and-play amplifier because it was specifically developed for simple and quick installations. With the included adapter wiring harness for Power Quadlock control units, you don't have to go through time-consuming installation processes. The automatic power-on function also significantly simplifies operation. Thanks to its ultra-compact dimensions of 216 x 39 x 84 mm, it can be easily integrated directly into the vehicle. This allows for immediate use, promising not only time savings but also a hassle-free user experience.
The heavy cast cooling body of the Quantum QM FOUR PP ensures that the heat generated during operation is effectively dissipated. The optimized cooling properties ensure that the amplifier does not overheat even under intense use and always operates within the optimal performance range. Efficient thermal management is crucial to extend the lifespan of electronic components and ensure consistent power delivery. Especially in more compact designs, as is the case with this amplifier, such cooling mechanisms are essential to maximize the efficiency of the Class D design.
On the Quantum QM FOUR PP amplifier, the frequency ranges for both channel pairs CH1/2 and CH3/4 can be individually adjusted. With a high-pass and low-pass filter that can be set from 40 to 4000 Hz, the amplifier offers tremendous flexibility in sound shaping. These adjustments allow you to optimize the frequencies according to your speaker configuration and personal sound preferences. The option for a bass boost of 0, 6, or 12 dB additionally allows for targeted enhancement of the low frequencies, which is particularly beneficial for bass-intensive music.
The Error Protection System (EPS) of the Quantum QM FOUR PP continuously monitors the high-level inputs for potential fault conditions. This system automatically detects critical states such as short circuits or overloads and protects the internal components from damage. These protective measures significantly enhance the operational reliability of the amplifier, and any failures can be prevented. The implementation of such a system is particularly important in car audio applications, as it minimizes the likelihood of disruptions in the audio flow while simultaneously increasing the longevity of your audio systems.
Yes, the Quantum QM FOUR PP features a compact bass level remote control that allows you to adjust the bass level directly from the driver's seat. This external control offers the flexibility to adjust the low-frequency output at any time without direct access to the amplifier. Especially when listening to different music genres, this function can be useful for optimizing the bass. The remote control is designed to be compact, so it neither disturbs the vehicle's interior nor takes up excessive space. Its easy accessibility makes adjusting the bass level extremely user-friendly.
The Cinch inputs and outputs of the Quantum QM FOUR PP are implemented via Molex connectors and offer a variety of connection options for audio signals from different sources. These high-quality connections ensure optimal transmission of audio signals, minimize signal loss, and thus guarantee brilliant sound results. You have the option to connect both radios and external audio devices to the amplifier, making integration into existing or new car audio systems easier. If you are looking for a flexible connection solution for your vehicle, these features provide a great option.
The Class D design of the Quantum QM FOUR PP allows for an efficiency of up to 86%, making this amplifier particularly suitable for car audio systems where efficient energy management is important. Due to the high efficiency, less heat is generated, which relieves the amplifier's cooling system and minimizes power consumption losses. Class D amplifiers are known for their compact design, allowing them to fit in small spaces, such as typical vehicle installations. These advantages make the Quantum QM FOUR PP ideal for applications where power and efficiency are crucial.
The Quantum QM FOUR PP is ideal for integration into vehicles that have a Quadlock connector for their audio systems. Thanks to its ultra-compact dimensions of 216 x 39 x 84 mm, it can fit into tight installation spaces. If the dimensions are compatible with the conditions in the vehicle, the installation of the amplifier can be carried out quickly and easily. In vehicles without a suitable Quadlock, adapter solutions may be used. This flexibility in application makes the QM FOUR PP an excellent choice for many common vehicle models and their sound upgrades.
The automatic power-on feature of the Quantum QM FOUR PP ensures that the amplifier automatically turns on and off, depending on the signal at the inputs. As soon as an audio signal is present, the amplifier is activated, ensuring simple and reliable operation. This eliminates the need for manual intervention and also protects the amplifier, as it is only in operation when necessary. This feature is particularly useful in modern vehicle environments, where comfort and functionality must go hand in hand, and supports a seamless user experience when listening to audio.

Audio Design Loudspeaker Sales GmbH
Am Breilingsweg 3
76709 Kronau
Germany

Authorized Managing Director:
Bruno Dammert

Contact: info@audiodesign.de

Product Specifications

Manufacturer

ESX

Product type

4-channel amplifier

Features

  • Highlights

    • 4 x 52/90 watts RMS at 4/2 Ω, efficiency up to 86%.
    • High-level inputs, error protection system, clipping LED.
    • Heavy cast heatsink, automatic power-on function.

weight

0.7 kg

Technical data

Watt RMS per channel

90

configurators

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Your advantages with Masori

Buy ESX Quantum QM FOUR PP online at Masori: 4-channel amplifier highlights

The ESX Quantum QM FOUR PP is a true powerhouse for plug-and-play applications. Its Class D design ensures impressive performance with minimal heat generation. With 4 x 52/90 watts RMS at 4/2 ohms, every musical experience is unforgettable. The compact design and heavy-duty cast heat sink guarantee optimal cooling in any driving situation. Thanks to the automatic power-on function and the high-level inputs with error protection system, it is easy to handle. Benefit from the Masori lowest price guarantee and secure the QM FOUR PP at the best price.

Optimized Class D design: Performance and efficiency of the Quantum QM FOUR PP

The 4-channel amplifier from ESX boasts a Class D design that is both energy-efficient and space-saving. This makes the amplifier ideal for concealed installation in vehicles with limited space. Its efficiency of up to 86% leaves nothing to be desired when it comes to performance without unnecessary heat generation. This high efficiency translates to lower power consumption and a longer vehicle battery life. Lower efficiency would generate more heat and increase power losses, which this amplifier optimally avoids.

Plug-and-play adapter wiring harness: Easy installation with Quadlock connector

The Quantum QM FOUR PP comes with an innovative adapter harness that enables simple plug-and-play installation. The 5-meter-long harness is specifically designed for Power Quadlock headunits, ensuring seamless integration with most vehicle radios. This advantage eliminates the need for complex conversions or additional adapters. A shorter harness would limit flexibility and complicate installation, while the included length provides optimal reach.

Compact dimensions: The Quantum QM FOUR PP fits seamlessly into any vehicle

Measuring 216 x 39 x 84 mm, the QM FOUR PP is perfect for hidden installations. These compact dimensions make it easy to mount the amplifier even in tight spaces, such as under the seat or in the glove compartment. A larger amplifier would take up more space and limit possible installation positions, while the QM FOUR PP increases flexibility while preserving the aesthetics of the vehicle interior.

Versatility through HPF/LPF from 40 to 4000 Hz: Flexible tone control

This amplifier offers the possibility of perfectly tuning the sound thanks to the high-pass and low-pass filters (HPF/LPF) between 40 and 4000 Hz on all four channels. This wide bandwidth allows you to precisely control the lower and upper frequencies and perfectly adapt them to your needs. A narrower frequency range would limit sound adaptation, while this wide range offers flexibility for all music genres and listening situations.

Bass Boost function for every strength: Adjustable sound for a rich listening experience

The ESX Quantum QM FOUR PP offers an adjustable bass boost function of 0, 6, or 12 dB for both channels 1/2 and 3/4. This adjustment allows you to amplify the bass precisely to your liking and further emphasize the low frequencies in the soundstage. A lower bass boost would noticeably limit the bass, while the option to increase it up to 12 dB ensures an intense sound experience. This is ideal for anyone who wants powerful bass reproduction.

High-level inputs with Error Protection System: Safety during use

The QM FOUR PP's high-level inputs are equipped with an innovative Error Protection System, ensuring seamless integration into your vehicle's existing audio system. This feature minimizes the risk of overload and damage and guarantees long-lasting performance. Without this error protection, the amplifier would be more susceptible to system errors, which could lead to failures or even damage in an emergency.

RCA inputs and outputs via Molex: Seamless system integration

With its RCA connectors controlled via Molex, the ESX Quantum QM FOUR PP offers seamless connectivity to other components in your car audio system. These inputs and outputs allow you to use the amplifier with both existing and new components without any additional effort. A lack of such connectors would severely limit expansion options, while this solution offers maximum flexibility in system design.

Automatic power-on function and clipping LED: user-friendliness meets performance

The Quantum QM FOUR PP from ESX features a convenient auto-on function that activates the amplifier immediately as soon as an input signal is detected. This simplifies operation and eliminates manual intervention. Additionally, the clipping LED ensures you're always aware of the optimal volume level to avoid distortion. An amplifier without these features would severely restrict user control and impair sound performance.

Start/Stop Ready with compact bass level remote control: Always under control

This model is start/stop ready, offering full functionality independent of the vehicle's power management. The included compact bass level remote control allows for user-friendly bass level control while driving. An amplifier without these features wouldn't be able to utilize the full potential of modern vehicles, while this design simplifies adjustment and control. Take advantage of professional on-site installation in Frankfurt (Oder) , find answers in the expert support FAQ & Help , and expand your knowledge in the Audio Blog .