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Audio System

M-90.4

4-channel amplifier

299,00€
299,00€ 299,00€
incl. VAT , possibly plus shipping

Stock options

Zahle in 3 zinsfreien Raten von 99,66€ mit Klarna. Mehr erfahren

Highlights

  • Power: 4x 90 WRMS at 4 ohms, 4x 160 WRMS at 2 ohms.
  • Efficient 3-stage cooling system ensures long-lasting performance.
  • Variable subsonic filters, HP, LP, BP filters for optimal sound.
Seen more cheaply Personal Offer
brand: Audio System
Delivery time:
Available for delivery in 1-4 days
Number:
Piece
Watt RMS per channel:
160
Amplifier Type:
Class D
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Rob

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Max

E-Mail Beratung von Experten

Werktags innerhalb von 24h

info@masori.de

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299,00€ 299,00€

The M-90.4 is a high-performance amplifier from Audio System. With its 4-channel Class A/B technology, this amplifier delivers an uncolored sound, even at the highest volume levels. Featuring variable and switchable subsonic filtering, HP, LP, BP filters, and FSA (Front-Stage Adjuster), this amplifier is among the most technologically advanced on the market. Additionally, it includes a 3-stage efficient fan/cooling system that ensures lasting performance. You have the option to add a remote control or use the RCA high-level input, which activates with automatic signal detection. The 4-channel amplifier M-90.4 – for an unparalleled sound experience.

features

  • 4-channel amplifier
  • With aluminum logo
  • 4-Channel Class A/B High-Power Amplifier with SMD Technology
  • Variable and switchable subsonic filtering
  • HP, LP, BP Filter
  • Full Active Mode
  • 3-stage efficient ON TOP fan/cooling system
  • Cable remote control RTC (optional)
  • FSA (Front-Stage Adjuster)
  • Cinch high-level input or adjustable signal detection with automatic activation

performance data

  • 4x 90 WRMS at 4 Ohm
  • 4x 160 WRMS at 2 Ohm
  • 2x 320 WRMS mono at 4 Ohm

Measurements

  • 295 x 50 x 185 mm
The M-90.4 from Audio System delivers a power of 4x 90 WRMS at 4 Ohms. This impressive output power ensures clear and undistorted audio transmission even at higher volumes. Thanks to the Class A/B technology, the amplifier provides consistent high-fidelity sound, which is ideal for discerning audiophiles who value detailed sound reproduction. This specification makes the M-90.4 the ideal choice for use in more complex car audio setups.
The Audio System M-90.4 is equipped with a variety of filter options, including variable and switchable subsonic filtering, high-pass (HP), low-pass (LP), and bandpass filters (BP). This versatility allows you to optimally adjust the sound to the acoustics of your vehicle and emphasize or eliminate specific frequency ranges. Such detailed filter settings are particularly important to achieve a perfectly tuned sound image and ensure that the amplifier harmonizes with different speaker systems.
The dimensions of the M-90.4 are 295 x 50 x 185 mm. Thanks to this compact design, the amplifier can be relatively easily installed in most vehicles without taking up unnecessary space. Despite its small size, the M-90.4 still offers impressive power reserves, ensuring that even in tight environments, there are no compromises in sound quality. These dimensions allow for flexible placement, whether in the trunk or under the car seat.
Yes, the M-90.4 from Audio System can optionally be controlled with a remote control of type RTC. This allows you to conveniently operate the main settings of the amplifier directly from the passenger compartment, without needing access to the amplifier itself. This is particularly useful when the amplifier has been installed in hard-to-reach places in the vehicle. The remote control ensures that you can make adjustments quickly and easily at any time.
The M-90.4 features a three-stage efficient fan/cooling system that ensures consistent performance. This advanced cooling prevents the amplifier from overheating, even during long listening sessions or when used at high power output. This cooling system is crucial for ensuring the longevity of the amplifier and maintaining audio quality at a high level. Good cooling is especially essential for high-power amplifiers like the M-90.4 to avoid thermal overload.
Yes, the M-90.4 from Audio System supports the so-called full active mode. This operating mode allows the crossover and amplification stages of the amplifier to be configured so that each speaker channel is addressed independently. This makes it a versatile solution for adjustments in complex audio playback systems that rely on personalized sound quality. This mode enables finer tuning and control over the entire audio setup and is ideal for users who want to perfectly customize their sound settings.
When the M-90.4 is operated at 2 Ohms, the power increases to 4x 160 WRMS. This power capability allows for intense sound dynamics even with demanding music styles and enhances the experience of a full and powerful sound. This specification demonstrates the flexibility and strength of the amplifier, which operates stably even at this low impedance. In particular, car Hi-Fi enthusiasts who value strong bass benefit from this feature without compromising on reliability.
The M-90.4 from Audio System features an adjustable signal detection with an automatic power-on mechanism when the RCA high-level input is used. Once an audio signal is detected, the amplifier turns on by itself, minimizing installation effort and simplifying everyday operation. This is particularly advantageous in vehicles where the goal is to ensure a simple entry into audio playback. This automatic detection provides comfort and seamless functionality, especially when starting to drive.
The M-90.4 from Audio System is a 4-channel amplifier that can also be operated in bridged mode if needed to optimize power output. In parallel operation, it offers 4x 90 WRMS at 4 ohms or 4x 160 WRMS at 2 ohms. When bridged, the amplifier delivers 2x 320 WRMS mono at 4 ohms. This flexible configuration allows the amplifier to be adapted to different speaker setups, whether for regular stereo applications or more powerful mono channels for subwoofer operation. The M-90.4 thus offers many customization options.
Yes, the M-90.4 features an integrated FSA (Front-Stage Adjuster) that allows you to precisely adjust the soundstage. With the FSA, the audio output can be fine-tuned to create an optimal front stage, thereby enhancing the sound's focus on the front speakers. Such adjustments are particularly useful for achieving a harmonious sound image and improved stereo separation in vehicle cabin settings. The FSA helps to tailor the sound to match personal listening preferences.

Axel Förderer
Audio System Germany
Falltorstraße 6
76707 Hambrücken
Germany

Contact: info@audio-system.de

Product Specifications

Manufacturer

Audio System

Product type

4-channel amplifier

Features

  • Highlights

    • Power: 4x 90 WRMS at 4 ohms, 4x 160 WRMS at 2 ohms.
    • Efficient 3-stage cooling system ensures long-lasting performance.
    • Variable subsonic filters, HP, LP, BP filters for optimal sound.

  • Uvp

    300

weight

2.3 kg

Technical data

Watt RMS per channel

160

configurators

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Your advantages with Masori

Buy the Audio System M-90.4 at a great price – The 4-channel amplifier for unadulterated sound

Are you looking for a powerful, high-quality amplifier? The Audio System M-90.4 could be the solution. You can buy it affordably, with our Masori lowest price guarantee. With its 4-channel Class A/B technology, it delivers pure sound. With variable and switchable subsonic filtering and flexible HP, LP, and BP filters, it adapts perfectly to your needs. The amplifier offers impressive performance with 4x 90 WRMS at 4 ohms, 4x 160 WRMS at 2 ohms, and 2x 320 WRMS mono at 4 ohms. Its efficient 3-stage fan/cooling system guarantees consistent performance. With the optional cable and automatic signal detection, it expands your options. Buy now directly online and revolutionize the in-car sound experience!

Unadulterated sound through 4-channel Class A/B technology

The Audio System M-90.4 utilizes 4-channel Class A/B technology, guaranteeing audiophile quality. This technology ensures that there is no loss of sonic purity, even at high volumes. Compared to conventional Class D amplifiers, Class A/B technology offers greater sonic fidelity. The amplifier efficiently eliminates distortion and preserves the authentic character of your music. While Class D is designed for energy efficiency, Class A/B focuses on sonic precision. The 4-channel design allows you to drive multiple speakers simultaneously and create customized soundscapes.

Variable subsonic filtering for optimized bass

The highlight of the M-90.4 is its variable and switchable subsonic filtering. This feature offers you the flexibility to suppress low-frequency noise that could overwhelm your subwoofer. The filter improves the efficiency of bass reproduction by filtering out unwanted frequencies. The adaptability of this filtering ensures speaker protection and clear bass definition. The ability to variably adjust this filter allows you to tailor the bass response to your system and music preferences. A lower value results in more precise bass, while a higher value could result in better energy distribution in certain scenarios.

Efficiency through 3-stage fan/cooling system

The Audio System amplifier features a sophisticated 3-stage fan/cooling system. This technology is crucial for controlling heat buildup and ensuring reliable operation of the amplifier under the harshest conditions. Compared to single-stage cooling systems, the 3-stage version offers significantly improved heat dissipation. The amplifier remains stable even under high loads, guaranteeing you continuous audio performance without the risk of overheating. Efficient operation maximizes the lifespan of your amplifier and ensures stable sound over long periods.

Wired remote control and RCA line-level input for increased flexibility

The optional wired remote control allows you to conveniently adjust your amplifier's settings at any time. This is especially useful if you want to change the audio settings while driving without being distracted by traffic. The RCA line-level input allows connection to virtually any audio system, as it activates automatically via signal detection. The combination of these features offers you maximum flexibility when integrating into existing systems. Individually adjustable signal detection ensures that the amplifier is only activated when needed, increasing overall efficiency.

HP, LP and BP filters for full system adaptation

The M-90.4's variably adjustable HP (high-pass), LP (low-pass), and BP (band-pass) filters allow you to precisely select the frequency separation for different components of your sound system. These filters are crucial for precisely tuning the sound to the requirements of the speakers used. The high-pass slider allows you to define the pain threshold of the tweeters, while the low-pass filter limits the frequencies for the woofers. The band-pass filter can even boost a limited frequency band to create an additional peak spectrum. Full control of these filters significantly expands the capabilities of your audio system.

FSA (Front-Stage Adjuster) for optimized soundstage

One of the most innovative features of the Audio System M-90.4 is the FSA (Front-Stage Adjuster). This technology allows you to precisely adjust the soundstage to your seating position. This adaptability allows for more precise acoustic imaging, which is essential in the world of sound control. Special features like these are rarely found in amplifiers of this class, which makes the M-90.4 unique. An optimized soundstage can mean the difference between standard use and a luxurious sonic experience.

Robust design and compact dimensions

The design of the Audio System M-90.4 is both robust and functional. Measuring 295 x 50 x 185 mm, it can be easily integrated into a variety of vehicle configurations. The compact size of this amplifier makes it universally applicable, regardless of the space available in your vehicle. Despite its small size, it delivers massive power output, which is unusual for its size. An aluminum logo provides a professional look and adds a visually appealing touch to your setup.

Accessories and integration options in the car

The M-90.4 amplifier from Audio System offers multiple integration options in your vehicle. Its extensive connectivity, including the RCA line-level connection and other connection options, makes expanding your existing system a breeze. Compatibility with various vehicle models is one of its strengths, enabling quick and trouble-free integration. The included setup documentation makes setup quick and easy. If you have any further questions or challenges, Masori also offers on-site installation in Frankfurt (Oder) and expert support (FAQ & Help ).

Optimization of sound quality through SMD technology

The use of SMD (surface-mounted device) technology in the M-90.4 audio system is another benchmark for state-of-the-art sound engineering. This technology allows for the placement of electronic components on the amplifier's circuit boards in a particularly space-saving manner while simultaneously maximizing signal quality. SMD technology contributes to improved signal processing, thereby reducing distortion and noise. The decision to use SMD technology reflects the goal of achieving the best possible, pure signal amplification. For further technical insights and suggestions, the Masori Audio Blog offers you additional information about car hi-fi and the optimal use of the M-90.4 amplifier.