Audio System Radion R-125.4 4-channel amplifier

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

Audio System Radion R-125.4 4-channel amplifier

Power 4x 125 WRMS @ 4 ohms, 4x 220 WRMS @ 2 ohms.
Bridged 2x 440 WRMS @ 4 Ohm, compact dimensions.
Adjustable LPF/HPF, precise sound optimization.
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€350,00

~~€350,00~~ €350,00

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Radion R-125.4 by Audio System

The Radion R-125.4 from Audio System is a 4-channel amplifier that impresses with its versatility and performance. With a power output of 4x 125 WRMS at 4 Ohm and 4x 220 WRMS at 2 Ohm, it offers impressive audio quality. Additionally, in bridged mode, it provides 2x 440 WRMS at 4 Ohm, making it ideal for various applications. The compact dimensions of 385 x 54.5 x 199.2 mm facilitate integration into diverse systems. With individually adjustable low-pass and high-pass filters (LPF and HPF) for both channels, the Radion R-125.4 guarantees precise sound optimization.

Features

4x 125 WRMS @ 4 Ohm
4x 220 WRMS @ 2 Ohm
2x 440 WRMS @ 4 Ohm
385 x 54.5 x 199.2 mm
Channel 1-2:
LPF: 50-500 Hz
HPF: 50-4000 Hz
Channel 3-4:
LPF: 50-3500 Hz
HPF: 20-500 Hz

Frequent questions about Radion R-125.4

Welche Leistung bietet der Radion R-125.4?

The Radion R-125.4 from Audio System delivers an impressive output of 4x 125 WRMS at 4 Ohm and 4x 220 WRMS at 2 Ohm. This capacity allows you to achieve high audio quality in both standard and power-intensive environments. In its bridged configuration, the amplifier can provide 2x 440 WRMS at 4 Ohm, making it particularly suitable for setups that require higher, concentrated power. This variety in power delivery makes it a flexible choice for various audio applications and highlights its versatility as a 4-channel amplifier.

Welche Dimensionen hat der Radion R-125.4?

The compact dimensions of the Radion R-125.4 amplifier are 385 mm in length, 54.5 mm in height, and 199.2 mm in width. These dimensions allow for easy integration into a wide range of audio systems, regardless of their size. Due to its low height of only 54.5 mm, it is particularly well-suited for installation in tight spaces or for applications where discretion and space-saving are of great importance. Thus, the Radion R-125.4 remains pleasantly space-saving despite its high performance.

Welche Anpassungsmöglichkeiten bietet der Radion R-125.4 bei den Filtern?

The Radion R-125.4 is equipped with individually adjustable low-pass and high-pass filters (LPF and HPF) that allow for precise sound optimization. For channels 1-2, you can adjust the LPF settings in the range of 50 to 500 Hz and the HPF settings from 50 to 4000 Hz. In contrast, channels 3-4 offer LPF settings from 50 to 3500 Hz and HPF from 20 to 500 Hz. These adjustment options allow you to perfectly tailor the audio output to the acoustic conditions and your individual preferences, enabling you to get the most out of your sound system.

Wie unterstützt der Radion R-125.4 unterschiedliche Ohm-Werte?

The Radion R-125.4 amplifier can be flexibly adjusted to different impedance values. At an impedance of 4 ohms, it delivers a power of 4x 125 WRMS, while at 2 ohms it reaches 4x 220 WRMS. In bridged mode, it achieves 2x 440 WRMS at 4 ohms. This ability to support various ohm values gives you the option to adapt it to different speaker configurations without losing power. This way, you can use the Radion R-125.4 in a variety of systems that require different loads.

Ist der Radion R-125.4 kompatibel mit gängigen Automarken und -modellen?

The Radion R-125.4 is ideally suited for installation in a variety of vehicles, regardless of the brand, due to its compact dimensions of 385 x 54.5 x 199.2 mm. Without naming specific car brands in the product description, it fits into most common models due to its size and flexibility. However, it is advisable to check the dimensions of the intended installation area to ensure that there is enough space available. The versatility of the performance parameters also efficiently supports various speaker systems in different types of vehicles.

Welche Vorteile bieten die einstellbaren Filter des Radion R-125.4?

The adjustable low-pass and high-pass filters offered by the Radion R-125.4 give you the flexibility to elevate your audio sound to a new level. The filters allow you to specifically emphasize or attenuate frequency ranges, depending on your personal sound preference or the acoustic requirements of the speaker system. In particular, when listening to genre-specific music, adjusting the filters helps achieve the desired sound character. The detailed adjustment ranges for channels 1-2 and 3-4 expand functionality and allow for a nuanced adjustment of the sound landscape.

Welche Konfigurationen unterstützt der gebrückte Modus des Radion R-125.4?

In the bridged mode of the Radion R-125.4 amplifier, you have the option to operate it with a power of 2x 440 WRMS at 4 Ohms. This configuration is particularly useful when you have a setup with few speakers that require high power. By bridging the channels, you can focus on acoustic precision and strength, maximizing your speaker performance. For applications that demand concentrated volume or specific sound projections, the bridged mode is an excellent choice that combines flexibility and power.

Wie trägt der Radion R-125.4 zu einer verbesserten Klangqualität bei?

The Radion R-125.4 contributes to significantly improving sound quality through its powerful amplification capabilities and adjustable filters. Providing power of up to 4x 220 WRMS without distortion ensures that even at high volumes, clear audio output remains without loss of quality. The precise control of frequency filters, both in the low and high frequency ranges, allows you to create a precise sound tailored to your own preferences. Additionally, the individual channel options help to optimally adjust the setup to specific acoustic conditions.

Wie lässt sich der Radion R-125.4 in ein bestehendes Audiosystem integrieren?

The integration of the Radion R-125.4 from Audio System into an existing audio system is quite straightforward due to its dimensions of 385 x 54.5 x 199.2 mm and the extensive adjustment settings. First, you should determine the space for installation, taking into account the size of the amplifier. After the physical adjustment, you can adjust the corresponding ohm settings and filters based on your speaker types and the vehicle acoustics. The potential to bridge the channels expands the possibilities to universally adapt the amplifier to your specific audio system.

Kann ich mit dem Radion R-125.4 meinen Sound personalisieren?

With the Radion R-125.4 from Audio System, you can personalize your sound by utilizing the versatile filter settings and power options. The individually adjustable LPF and HPF on all four channels allow you to precisely tailor the playback of low and high frequencies to your listening habits. In combination with the power options ranging from simple to bridged configurations, you can customize sound characteristics and dynamics. Such personalization is ideal for fine-tuning the listening experience to your preferences, whether for bass-heavy music or high-resolution sounds.

Herstellerinformation/verantwortliche Person

Axel Förderer
Audio System Germany
Falltorstraße 6
76707 Hambrücken
Germany

Contact: info@audio-system.de

Let customers speak for us

from 9059 reviews

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

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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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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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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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