3. Bestseller Amplifier
  5. Opus II

Opus II

400 Watt

Opus II

Technical Highlights

  • Output power 2Ω, 400W x 2, mono up to 1350W at 2Ω.
  • Input impedance of 48KΩ, frequency response ranges from 8Hz to 50kHz.
  • Signal-to-noise ratio over 100dB, input sensitivity 0.4–8V.
  • More technical details
€6,789.03
€6,999.00 €6,789.03
2% discount with credit card

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ProductOpus II

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1 year extra warranty

Every product purchased from Masori includes an additional year of warranty in the third year after purchase (months 25–36). We cover repair or replacement free of charge for covered warranty claims. Automatic and free – exclusively for Masori customers. Your statutory rights remain unaffected.

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datasheet
Sundown AudioSALT-200.4
Sundown Audio-SALT-200.4-4-Kanal Verstärker-masori-kaufen
Quartorigo-Opus I-2-Kanal Verstärker-masori-kaufen
QuartorigoOpus I
Quartorigo-Opus II-2-Kanal Verstärker-masori-kaufen
€6,789.03
€6,999.00 €6,789.03

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The Opus II by Quartorigo is a 2-Channel Amplifier with a compact design of 433 x 238 x 54 mm and a weight of 7.7 kg. The power supply is designed for 10 to 14.4 Vcc, with the standby current exceeding 2 A. The device features a wide frequency response of 8 Hz to 50,000 Hz and a signal-to-noise ratio of over 100 dB. The input sensitivity is adjustable in the range of 0.4 to 8 V, and the input impedance is 48 kΩ. In stereo operation, the amplifier achieves outputs of 220 W x 2 at 4 Ω and 400 W x 2 at 2 Ω. For mono operation, outputs of 760 W x 1 at 4 Ω and 1350 W x 1 at 2 Ω are available.

Features
  • Product Type: 2-Channel Amplifier
  • Manufacturer: Quartorigo
  • Dimensions: 433 x 238 x 54 mm
  • Weight: 7.7 kg
  • Frequency Response: 8 Hz – 50,000 Hz
  • Signal-to-Noise Ratio: >100 dB
  • Input Impedance: 48 kΩ
  • Input Sensitivity: 0.4–8 V
Technical Specifications
  • Output Power Stereo 4 Ω: 220 W x 2
  • Output Power Stereo 2 Ω: 400 W x 2
  • Output Power Mono 4 Ω: 760 W x 1
  • Output Power Mono 2 Ω: 1350 W x 1
  • Power Supply: 10–14.4 Vcc
  • Standby Current: > 2 A

datasheet

Open data sheet

Frequently Asked Questions about Opus II

What power supply does the Quartorigo Opus II require?

The Quartorigo Opus II requires a power supply of 10 to 14.4 Vdc. This is important to ensure optimal system performance. A stable voltage range ensures a consistent audio experience at both low and high demands. Especially with Amplifiers, the power supply is crucial for sound quality and overall system stability. In vehicles, this voltage range is ideal as it is compatible with most onboard electrical systems. Make sure your power source meets these specifications to ensure proper operation.

What is the input sensitivity of the Quartorigo Opus II?

The Quartorigo Opus II offers versatile input sensitivity from 0.4 to 8 V. This allows you to operate the amplifier with a variety of signal sources, from low-power output signals to stronger ones. Properly setting the input sensitivity is crucial to avoid distortion and optimize sound quality. This flexibility supports both medical applications and individual sound installations, enabling you to find the ideal balance for your audio setup, regardless of the signal source.

What output power does the Quartorigo Opus II provide in different impedance configurations?

The Quartorigo Opus II is incredibly flexible when it comes to output power. In stereo configuration, the amplifier delivers 220 W per channel at 4 Ω and an impressive 400 W per channel at 2 Ω. In mono operation, the Opus II reaches 760 W at 4 Ω and an impressive 1350 W at 2 Ω. These configuration options allow you to adapt to different speaker arrangements. Adjusting the impedance to the specific requirements of your setup ensures maximum power efficiency and sound quality, whether you are driving smaller speakers or powerful subwoofers.

How compatible is the Opus II with common car brands considering the dimensions?

The Opus II from Quartorigo measures 433 x 238 x 54 mm, a compact size suitable for installation in many modern vehicles. The low height of 54 mm allows for installation in tighter spaces, while the other dimensions enable easy transport and seamless integration into your existing audio system. This is especially important for placement in vehicles where space is limited. Ensure that the designated area in the vehicle is tailored to these dimensions to guarantee a secure installation.

What frequencies does the Quartorigo Opus II cover?

The Quartorigo Opus II has a frequency response of 8 Hz to 50,000 Hz. This wide spectrum ensures that both the deepest bass and the highest treble are reproduced accurately. Such a broad frequency range is ideal for audiophiles who want to hear every detail of their music, from subwoofer-heavy beats to crystal-clear highs. It is essential to use the right audio chain to fully take advantage of this frequency response, especially if you do not want to compromise when reproducing detailed soundscapes.

What is the signal-to-noise ratio of the Quartorigo Opus II?

The signal-to-noise ratio of the Quartorigo Opus II is >100 dB, which means that the amplifier operates with extremely low noise and provides high sound quality. A high signal-to-noise ratio is crucial for clear audio playback, as it determines the ratio between the desired audio signal and unwanted background noise. This feature makes the Opus II an excellent choice for sensitive and demanding audio environments where clarity and precision are a priority. Ensure that your connected devices provide the same quality to fully exploit its potential.

What is the input impedance of the Quartorigo Opus II?

The input impedance of the Quartorigo Opus II is 48 KΩ. A high input impedance like this minimizes the influence of the connected signal source on the input signal and ensures an uncolored sound. As with any high-quality audio component, matching the input impedance to the signal source is important to avoid power losses and optimize sound fidelity. When integrating the Opus II into your audio system, it is advisable to check compatibility with your existing devices to achieve the best possible sound quality.

What are the standby current values of the Quartorigo Opus II?

The Quartorigo Opus II has a standby current consumption of >2 A. This means that even in standby mode, a relatively low power consumption is maintained. This is particularly important to preserve the vehicle's battery and extend the system's lifespan. A low standby consumption ensures that the system operates efficiently while not excessively burdening the battery. Keep this in mind when installing the amplifier in a vehicle to maintain energy efficiency and system durability.

How much does the Quartorigo Opus II amplifier weigh?

The Quartorigo Opus II weighs 7.7 kg. This relatively low weight for an amplifier with such impressive performance significantly simplifies installation and transport. For mobile applications or motorsport vehicles where weight is critical, the Opus II offers an excellent balance between performance and mobility. In applications where vibrations may play a role, the appropriate weight also helps ensure secure and stable positioning within the vehicle.

What installation tips can be given for the Quartorigo Opus II in the car?

When installing the Quartorigo Opus II in the car, you should particularly pay attention to the dimensions of 433 x 238 x 54 mm to find a suitable installation location. Ensure adequate ventilation, as this supports heat dissipation and optimizes performance. The device should also be mounted in a position that is away from moisture and extreme vibrations to ensure operational reliability. Make sure that the power supply meets the requirements of 10–14.4 Vcc to achieve the best performance. Follow all vehicle specifications during installation to guarantee a smooth integration.

Manufacturer information/responsible person

Quartorigo

Via Roma 68/A

62100 Macerata (MC) | Italy

info@quartorigo.com

+39.0733.262025

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