1. Home
  3. Audio System
  5. 4-channel amplifier
  7. CO-70.4
Audio System

CO-70.4

4-channel amplifier

249,00€
249,00€ 249,00€
incl. VAT , possibly plus shipping

Stock options

Zahle in 3 zinsfreien Raten von 83,00€ mit Klarna. Mehr erfahren

Highlights

  • Four times 70 WRMS power at 4 ohms, switchable HP and LP filters.
  • Four times 110 WRMS at 2 ohms, 220 WRMS bridged at 4 ohms.
  • Input 0.2-8 Volt, automatic switching on via RCA input.
Seen more cheaply Personal Offer
brand: Audio System
Delivery time:
Available for delivery in 1-4 days
Number:
Piece
Watt RMS per channel:
110
Amplifier Type:
Class D
Expert Image

Rob

Expert Image

Max

E-Mail Beratung von Experten

Werktags innerhalb von 24h

info@masori.de

Audio SystemCO-100.2
Audio System-CO-100.2-2-Kanal Verstärker-masori-kaufen
Audio System-CO-70.4-4-Kanal Verstärker-masori-kaufen
249,00€
249,00€ 249,00€

The CO-70.4 is another impressive 4-channel amplifier from the renowned manufacturer Audio System. Known for its compact dimensions and excellent price-performance ratio, this model offers high-quality Class-AB amplifier technology for optimal sound and performance. Equipped with variable, switchable HP and LP filters, optional RTC, and an input sensitivity of 0.2 to 8 volts, this amplifier can be flexibly adjusted to individual needs. With its RCA high-level input including automatic power-on, it sets new standards in user-friendliness.

Features

  • 4-Channel A/B Amplifier Audio System CO-70.4
  • Variable, switchable HP and LP filters
  • RTC (optional)
  • 0.2-8 Volt input sensitivity
  • RCA high-level input with automatic switching on

performance data

  • 4x 70 WRMS at 4 Ohm
  • 4x 110 WRMS at 2 Ohm
  • 2x 220 WRMS mono at 4 Ohm

Measurements

  • 280 x 47 x 171 mm
The CO-70.4 offers 4x 70 WRMS at 4 Ohms, ideal for speakers with higher impedance. If you reduce the impedance to 2 Ohms, you get 4x 110 WRMS, which allows for a significantly higher output. Additionally, you can switch the amplifier to a 2-channel mode at 4 Ohms to achieve 2x 220 WRMS for subwoofers or other high-performance drivers. These power specifications demonstrate the flexibility of the amplifier in various setups, allowing you to achieve the optimal sound for your needs, whether you are driving large speakers or subwoofers. The power is designed to cover a wide range of impedance configurations.
The switchable HP (high-pass) and LP (low-pass) filters in the amplifier CO-70.4 allow you to customize the frequency response. These filters provide precise control over the audio signal by eliminating unwanted frequencies either above or below a certain threshold. This is particularly advantageous when you want to highlight specific sound characteristics of your speakers or subwoofers. By activating the filters, you can prioritize low frequencies for subwoofers or high frequencies for speakers, tailoring the sound experience to your acoustic preferences, thereby maximizing the overall performance and sound quality of your audio system.
The Class-AB technology in the CO-70.4 offers an excellent balance between efficiency and sound quality. This amplifier class combines the low distortion and high sound potential of Class-A amplifiers with the efficiency and power of Class-B amplifiers. This results in a clear and detailed sound across the entire frequency range. This is particularly advantageous for music lovers who value detailed sound dynamics while also improving energy efficiency. By using Class-AB technology, the CO-70.4 prevents thermal overloads and ensures long-lasting, reliable performance.
The input sensitivity of the CO-70.4 can be flexibly adjusted between 0.2 to 8 volts. This allows you to seamlessly connect the amplifier to various audio sources, whether it's a car radio or an external audio player. A correctly set input level is crucial to avoid distortion and to utilize the full range of power and dynamics of the audio signal. This wide range of input sensitivity ensures that the CO-70.4 can deliver optimal performance under various circumstances and sources without encountering adaptation issues.
The CO-70.4 has compact dimensions of only 280 x 47 x 171 mm, which greatly simplifies its installation in vehicles or other tight spaces. Despite its powerful technology, the slim design allows for discreet placement, often even under seats or in side panels. This size gives you the flexibility to install the amplifier in vehicles with limited space without having to compromise on performance. The thoughtful design is one of the highlights that makes the CO-70.4 significantly advantageous for installation in a variety of cars.
The RCA high-level input of the CO-70.4 features an automatic power-on function that significantly enhances the user-friendliness of the amplifier. As soon as an audio signal is detected, the amplifier automatically turns on. This function eliminates the need for manual power on and off, ensuring that the amplifier is always ready for use as soon as the audio system is started. Furthermore, this automation also protects the devices from unnecessary strain and reduces energy consumption by only turning on the amplifier when audio signals are present.
The RTC (Remote Turn-On Control) on the CO-70.4 gives you the ability to turn the amplifier on or off from a remote source. This feature is particularly useful when the amplifier is installed in a hard-to-reach location or when you prefer simple control. The RTC connection can be easily paired with a variety of control devices, providing additional flexibility in your audio system. With optional RTC, handling the amplifier becomes even more convenient, as it can facilitate integration into various audio-visual system landscapes.
When placing the CO-70.4, it is important to choose a location that is well-ventilated while also providing protection from moisture and direct sunlight. Due to its compact size of 280 x 47 x 171 mm, you can easily mount it under the car seats or in the trunk. Ensure a solid attachment to avoid vibrations during driving. A central location in the vehicle can help minimize cable lengths and thus improve signal quality. By positioning it correctly, you maximize the performance and durability of the amplifier.
The CO-70.4 is compatible with most common car brands and models due to its universal input sensitivity of 0.2 to 8 volts and its compact dimensions. This flexibility allows the amplifier to be integrated into both small cars and larger vehicles. The easy installation and adjustment of power to the respective vehicle configuration are additional advantages that the CO-70.4 offers. The dimensions allow for a variety of installation options, making this amplifier an excellent choice for many car owners who value personalized sound.
The RCA high-level input of the CO-70.4 offers excellent adaptability to different source devices. With its automatic power-on function, the amplifier is activated as soon as an audio signal is detected, which significantly simplifies operation. This feature is particularly useful in combination with modern car radios and other sources that may not be equipped with traditional low-level outputs. The high-level input makes the CO-70.4 a very versatile device that is compatible with various audio setup configurations, ensuring a seamless transition between different audio sources.

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

    • Four times 70 WRMS power at 4 ohms, switchable HP and LP filters.
    • Four times 110 WRMS at 2 ohms, 220 WRMS bridged at 4 ohms.
    • Input 0.2-8 Volt, automatic switching on via RCA input.

  • Uvp

    250

weight

2.5 kg

Technical data

Watt RMS per channel

110

configurators

Recently viewed products

Masori-Komplettanlage Car HiFi mit DSP-Einbauservice-masori-kaufen
Masori-Akustikdämmung & Hitzeisolierung Dachhimmel-Einbauservice-masori-kaufen

Have it installed directly!

  • Individual products or entire systems
  • Insulation of doors and more
  • Calibration and system settings, as well as troubleshooting
  • And much more in our installation service in Frankfurt (Oder)
Learn more!

Your advantages with Masori

Buy the 4-channel amplifier CO-70.4 from Audio System at a great price

Experience the world of high-quality audio amplification with the 4-channel CO-70.4 amplifier from Audio System. This model combines compact dimensions with outstanding Class AB amplifier technology, making it an attractive choice for anyone seeking premium sound at the best price. With variable, switchable HP and LP filters, the amplifier offers flexible adjustment to individual preferences. The input sensitivity of 0.2 to 8 volts ensures versatility and ease of use. The RCA high-level input with automatic switch-on also enables effortless operation. On top of that, the Masori Lowest Price Guarantee ensures the best price for your audio upgrade.

Class AB amplifier technology for ultimate music enjoyment

The CO-70.4 from Audio System utilizes Class AB amplifier technology, which offers an excellent compromise between sound quality and efficiency. Class AB amplifiers are known for their ability to combine the warmth of Class A and the efficiency of Class B technologies. This technology allows the amplifier to deliver low-distortion sound even at higher volumes. If the amplifier relied solely on Class B technology, the sound could be distorted at high levels, while pure Class A could lead to excessive heat generation. The Class AB technology of the CO-70.4 is therefore ideal for ensuring high-quality sound at any volume.

Flexibility through switchable HP and LP filters

With its variable, switchable high- and low-pass filters (HP and LP), the CO-70.4 from Audio System offers customization options for any audio system. These filters allow precise adjustment of the crossover to tailor the sound characteristics to individual needs. For example, the high-pass filter can prevent low frequencies from reaching smaller speakers, which would otherwise not reproduce them accurately, while the low-pass filter keeps high frequencies away from a dedicated subwoofer. Such filter settings are essential for perfect sound balance in a vehicle, whether it's a high-performance sound system or a discreet car hi-fi solution.

Input sensitivity for versatile applications

The adjustable input sensitivity from 0.2 to 8 volts provides an excellent foundation for a wide variety of audio systems. This flexibility allows Audio System's CO-70.4 to work with both factory head units and high-quality aftermarket systems. A low input sensitivity allows integration into systems with high output levels, while a high sensitivity optimizes amplifier performance at low output levels. This adjustment option ensures that the sound input is always optimally balanced, resulting in an unparalleled audio experience tailored specifically to your needs.

Powerful 4-channel capabilities

The Audio System CO-70.4 amplifier delivers robust performance with 4x 70 WRMS at 4 ohms and 4x 110 WRMS at 2 ohms, allowing for a high degree of flexibility in speaker system selection. The amplifier can also be bridged, achieving 2x 220 WRMS mono at 4 ohms. This power capacity ensures that even demanding speakers are supplied with enough power to reach their full potential. Too low power values ​​could result in an underpowered system that distorts at higher volumes or even causes speaker damage.

Compatible dimensions for easy integration

With its dimensions of 280 x 47 x 171 mm, the CO-70.4 from Audio System is a prime example of compactness without compromising on performance. These dimensions make it ideal for discreet installation, even in vehicles with limited space. A cabinet that is too large could significantly complicate or even prevent installation. Thanks to these compact dimensions, the amplifier can be easily integrated under seats or in trunk lids—a key advantage in vehicles where space limitations are a critical factor.

Installation and support for the Audio System Amplifier CO-70.4

For the installation of the Audio System CO-70.4 amplifier, we offer on-site installation in Frankfurt (Oder) . Our professional installation services ensure that the amplifier is optimally integrated into your vehicle. If you have any questions about functionality or installation, our expert support FAQ & Help offers comprehensive assistance. Expand your knowledge with our Audio Blog , which provides you with the latest trends and tips in car hi-fi.

RCA high-level input with automatic switch-on

The RCA line-level input of Audio System's CO-70.4 features an automatic switch-on feature, significantly increasing ease of use. This mechanism automatically detects the input signal and activates the amplifier without manual intervention. This convenience is unavailable in many current models and prevents accidental shutdowns or power losses due to incorrect operation. If the amplifier had to be switched on manually, there would be a risk of not being able to enjoy the sound at the output without active user interaction.

Optional RTC for extended control options

The optional RTC remote control provides additional control options directly from the cockpit. This feature is especially useful while driving, when the driver wants to adjust the volume or other amplifier settings without being distracted from the road. In many competitor models, such adjustments must be made on the head unit, making assembly and adjustment more time-consuming. Greater user-friendliness leads to more convenient and secure control.