Thumbnail of product Hearo 777 Quadra from brand AKG
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Headphone AKG Hearo 777 Quadra

The AKG Hearo 777 Quadra headphones are an ideal choice for music lovers seeking an immersive audio experience. With their closed acoustic system, they provide optimal sound isolation, allowing for total immersion in your favorite tracks. Thanks to their frequency range of 18 to 24000 Hz and a total harmonic distortion of only 1 %, these headphones ensure faithful and high-quality audio reproduction.

Equipped with rechargeable battery technology, the AKG Hearo 777 Quadra offers up to 20 hours of continuous audio playback, allowing you to enjoy your music without interruption. Their dynamic drivers ensure rich and dynamic sound reproduction, ideal for audiophiles.

In terms of connectivity, these headphones operate wirelessly, with a range of 100 meters, providing you with great freedom of movement. Their in-ear design guarantees prolonged listening comfort, perfect for daily use.

Weighing only 320 g, the AKG Hearo 777 Quadra are lightweight and easy to carry. They also feature a built-in power button for simplified control. In summary, these headphones combine performance, comfort, and practicality for an unparalleled audio experience.

Manual of product Hearo 777 Quadra

8 10

Editorial note

The AKG Hearo 777 Quadra stands out for its impressive audio performance, offering a wide frequency range from 18 to 24000 Hz. This ensures a rich and dynamic sound reproduction, ideal for audiophiles seeking an immersive listening experience. Additionally, the 20-hour continuous playback time is a major advantage, allowing users to enjoy their music without interruption for long periods. The NiMH rechargeable battery technology enhances the economic and ecological aspect of this product. However, some drawbacks are worth noting. The weight of the receiver, which reaches 500 g, may be perceived as relatively heavy, potentially causing discomfort during prolonged use. Furthermore, the lack of RF connectivity limits connection options, which can be a disadvantage for users looking to maximize their audio performance. Finally, while the wireless connectivity with a range of 100 m is satisfactory, it may not be sufficient in crowded environments. In terms of design, the AKG Hearo 777 Quadra features a modern and sleek appearance. However, the comfort of use may vary depending on individual preferences, particularly due to the in-ear coupling that may not suit everyone. Overall, the AKG Hearo 777 Quadra is an excellent choice for those who prioritize sound quality and battery life, but it is advisable to consider its weight and connectivity limitations before making a purchase.

Score details

User experience

The user experience is overall positive thanks to a closed acoustic system and in-ear coupling, offering excellent sound immersion.

Performance

The audio performance is impressive with a wide frequency range of 18 to 24000 Hz, but the NiMH battery technology may be less efficient compared to modern alternatives.

Battery life

The 20-hour continuous audio playback time is a major advantage, allowing for prolonged use without recharging.

Design

The design is modern and sleek, although the 500 g weight of the receiver may be a drawback for extended use.

connectivity

The wireless connectivity with a range of 100 m is appreciated, but the lack of RF connectivity may limit options for some users.


Advantages

20 hours of continuous audio playback

Rechargeable NiMH battery, eco-friendly

Optimal sound isolation, total immersion

Wide frequency range 18-24000 Hz

Wireless connectivity up to 100 m

Disadvantages

Heavy receiver of 500 g.

No RF connectivity.

Less efficient NiMH battery.

Insufficient range of 100 m.

Uncomfortable in-ear coupling.

Technical Specifications Hearo 777 Quadra

General Information

Battery

  • Streaming audio playback
    20 h
  • Battery technology
    Nickel-metal hydride (NiMH)
  • Battery type
    AAA
  • Number of supported batteries
    2
  • Battery voltage
    1.2 V
  • Rechargeable battery
    Yes

Headphones/Earphones

  • DHT, total harmonic distortion
    1 %
  • Acoustic system
  • Driver type
    Semi-open
  • Headphone frequency
    Dynamic
  • Ear coupling
    18 - 24000 Hz
  • Circum-aural

Connectivity

  • Frequency band
    0.863 GHz
  • Wireless router range
    100 m
  • Connectivity technology
    Wireless
  • RF Connectivity
    Yes

Other features

  • Receiver weight
    500 g

Representation / realization

  • Built-in power button
    Yes
  • Sound pressure level (max)
    125 dB
  • Product color
    Black
  • Portable headset style
    Arc
  • Product type
    Headphones

Packaging contents

  • Quantity
    1

Weight and dimensions

  • Weight
    320 g

Frequently Asked Questions

At what volume is there a risk of damaging one's hearing?
A sound level of 80 decibels can be harmful to hearing. If the volume exceeds 120 decibels, injuries can occur immediately. The danger to hearing depends on the frequency and duration of listening.
Is it possible to make hands-free calls with my headphones?
Modern headphones are generally equipped with a built-in microphone that allows for making calls.
What is noise cancellation technology?
Noise cancellation reduces surrounding noise.
What is Bluetooth?
Bluetooth allows for the wireless transmission of data between electronic devices via radio waves. Generally, the range of this connection can reach up to ten meters.
What is the weight of the AKG Hearo 777 Quadra headphones?
The AKG Hearo 777 Quadra headphones weigh 320 grams.
Is the user manual for the AKG Hearo 777 Quadra available in French?
Yes, the user manual for the AKG Hearo 777 Quadra is available in French.

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Presentation of product Hearo 777 Quadra specifications from brand AKG

General Information

The AKG Hearo 777 Quadra headphones, manufactured by the renowned brand AKG, are designed to provide a high-quality sound experience. Known for its innovation and expertise in the audio field, AKG ensures with this model optimal performance for users seeking an immersive listening experience.

Battery

The AKG Hearo 777 Quadra stand out with their impressive battery life, allowing up to 20 hours of continuous audio playback. Thanks to a rechargeable nickel-metal hybrid (NiMH) battery and using AAA batteries, these headphones offer a sustainable and economical solution for daily use. With a voltage of 1.2 V, they are designed for reliable and prolonged performance.

Headphones/Earphones

These headphones feature a total harmonic distortion of only 1 %, ensuring faithful and high-quality sound reproduction. Their closed acoustic system provides excellent sound isolation, creating total immersion in your music. Equipped with dynamic drivers, they offer rich sound reproduction, suitable for audiophiles. With a frequency range from 18 to 24000 Hz and an in-ear coupling, the AKG Hearo 777 Quadra ensure prolonged listening comfort while preserving sound quality.

Connectivity

The headphones benefit from wireless connectivity, operating on a frequency band of 0.863 GHz with a range of up to 100 meters. This feature offers great flexibility of use without the constraints of wires, although it should be noted that RF connectivity is not supported.

Other Features

The weight of the receiver of the AKG Hearo 777 Quadra is 500 g, which can be considered relatively heavy, but ensures easy handling. The headphones are equipped with a built-in power button, facilitating their use. The maximum sound pressure level reaches 125 dB, ensuring an immersive sound experience while maintaining listening comfort.

Representation / Realization

The black color of the AKG Hearo 777 Quadra gives them a modern and elegant look, while their in-ear design ensures a comfortable fit during your movements. These headphones are ideal for an immersive audio experience.

Packaging Contents

The packaging contains one unit of the AKG Hearo 777 Quadra, providing you with everything you need to enjoy your music.

Weight and Dimensions

The total weight of the AKG Hearo 777 Quadra is 320 g, making them suitable for prolonged use without excessive fatigue.