1.Hi-Res (High-Resolution Audio)

Hi-Res, short for "High-Resolution Audio," refers to audio sources and playback technologies that record sound at a higher resolution than CDs. It is an audio format designed to reproduce music details and atmosphere more faithfully. Since Hi-Res refers to the audio source, earphones labeled as "Hi-Res compatible" indicate that they are capable of playing Hi-Res audio sources.

Features of Hi-Res Audio

The characteristic of Hi-Res audio is its high sampling frequency. Sampling frequency refers to the number of data points recorded per second. In Hi-Res, it is common to have a sampling frequency of 44.1kHz (the standard for CDs) or higher. Examples include 96kHz, 192kHz, and so on.

Hi-Res audio also uses a higher bit depth, which refers to the precision of converting the amplitude (volume) of sound into numerical values. The bit depth for CDs is 16-bit, but for Hi-Res, 24-bit or higher is commonly used.

Additionally, Hi-Res audio can record frequencies beyond the human hearing range of 20Hz to 20kHz (for example, frequencies above 40kHz). This allows for more accurate reproduction of harmonics and the atmosphere of music.

By using Hi-Res compatible earphones or speakers, you may discover new aspects of songs you hadn't noticed before.

2.How to Choose Hi-Res Compatible Earphones

Noise Cancelling refers to the technology used to reduce or eliminate external noise. It is mainly featured in headphones and earphones, allowing users to enjoy music or audio in quiet environments or improve the sound quality during calls.
There are different types of noise cancelling, as described below.

Points to Check for the Hi-Res Logo

To determine if an earphone is compatible with Hi-Res audio, it is important to check for the "Hi-Res" logo.
Products with this logo are capable of reproducing high frequencies above 40kHz and can accurately play back the high level of detail found in Hi-Res audio sources.
However, there are models that deliver high sound quality even without the logo, so it is essential to carefully review the product specifications.
Particularly, understanding what Hi-Res means and choosing a product that suits your needs is key.

EarFun Air Pro 4

These are Hi-Res LDAC-compatible Bluetooth earphones. LDAC is one of the Bluetooth audio codecs developed by Sony.
A codec refers to the technology or format used to compress and decompress audio and video data. It plays a crucial role in storing and transferring audio data, allowing sound to be transmitted without losing its quality.

QCY MeloBuds Pro

This is also a Hi-Res LDAC-compatible Bluetooth earphone. It is a product from the brand QCY, which has won the VGP 2025 Gold Award.

SOUNDPEATS Air3 Deluxe HS

These are Hi-Res compatible Bluetooth earphones from the company SOUNDPEATS.

Enhancing Sound Quality with an Amp or DAC

To fully enjoy Hi-Res audio, utilizing an amp or DAC (Digital-to-Analog Converter) is effective. Hi-Res audio is a high-resolution source with more information than traditional CD sources, and to unlock its full potential, the quality of the playback device is key.

Moreover, if the built-in DAC of your device does not support Hi-Res audio, you can combine an external DAC to seamlessly connect with Hi-Res compatible devices. By connecting a USB DAC to your PC or smartphone, you can properly transmit the Hi-Res audio format to Bluetooth earphones or speakers. This allows you to faithfully reproduce the fine details of the music and provide an immersive audio experience.

How to get Hi-Res Audio Sources

Even with Hi-Res compatible devices, you won't be able to enjoy the experience without Hi-Res audio sources. Currently, there are many music distribution services offering Hi-Res content, with well-known platforms like "e-onkyo music" and "mora" being popular choices. These sites allow you to easily search and purchase Hi-Res audio by artist or genre.

Additionally, some music streaming services support Hi-Res audio streaming. For example, services like "Amazon Music HD" and "TIDAL" allow you to enjoy a wide range of Hi-Res content with a monthly subscription. By combining these services with Hi-Res compatible speakers or earphones, you can enjoy a music experience that comes close to a studio recording.

The Importance of Listening at the Right Volume and in the Right Environment

Creating an appropriate listening environment is crucial for enjoying high-quality music. While it may seem obvious, especially with Hi-Res audio, which faithfully reproduces fine details, small noises or ambient sounds can interfere with the music experience. Therefore, listening in a quiet space is recommended.

Additionally, when using earphones or speakers, it is important to pay attention to the volume. Listening at high volumes for extended periods can put strain on your ears, so it’s important to maintain an appropriate volume. Hi-Res audio not only offers excellent sound quality, but also allows you to enjoy the depth and atmosphere of the music. Keep the volume at a comfortable level and create a pleasant space for your listening experience.

4. Summary of Hi-Res Articles

Above is a summary starting from the basics of Hi-Res and introducing recommended products.
Choose the right earphones and audio sources to enjoy music at a higher quality.