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An in-depth explanation of the basics of MQA playback, which is gaining momentum with iFi audio support.

https://www.phileweb.com/review/article/201805/24/3042.html

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May 24, 2018.
iFi audio now supports MQA. Exploring its benefits!

iFi audio's portable products, which have recently become very popular in the portable audio field, are now MQA compatible, a hot topic.

Although iFi audio may seem like a new portable audio manufacturer, it is actually a subsidiary of AMR, a manufacturer with a long history and reputation in high-end audio, and a brand created to keep up with the latest technology and user trends. It is also a technology-oriented brand led by the brilliant Dr. Torsten, who takes pride in traditional British technology. It is therefore understandable that iFi audio was the first to support MQA, a hot topic in the latest PC audio field.





All of iFi audio's current products are now MQA compatible. The photo shows the developer, Dr. Torsten, holding xDSD *Photo by Yoshihiro Sasaki.

In this article, I will explain the benefits of iFi audio's MQA support, and how to use it to your advantage.

What is MQA?

First of all, I would like to explain what MQA is.


MQA stands for "Master Quality Authenticated" and is a technology proposed by British audio manufacturer Meridian around 2015. Today, the technology is managed by a company called MQA, which is separate from Meridian. For simplicity's sake, MQA is a technology for new sound sources such as DSD and Hi-Res.

There are still many sound source formats available, but the advantage of MQA over conventional sound source formats is, simply put, that it achieves a balance between the previously contradictory elements of digital music: high sound quality and low data volume. In other words, while high-resolution and DSD provide good sound quality but require a large amount of data, MQA provides high sound quality and requires only a small amount of data.

Specifically, a 192kHz/24bit high-resolution FLAC file would require 150MB of data, while an MQA file would require only 30MB, while maintaining the same sound quality. This is an overwhelming weight reduction compared to previous versions.


This is a comparison of the data size of the same song with a sample sound source provided by 2L. The MQA for this song is a file encoded from a 352.8kHz/24bit master (Exhibit: courtesy of MQA Ltd.)

The next advantage is that MQA is a technology with a wide range of applications. MQA can be applied to all of the three main types of digital audio sources: CD, download, and streaming. Also, MQA does not perform non-integral folding, so depending on the original format, there are both 44.1kHz (88.2kHz, 176.4kHz, etc.) and 48kHz (96kHz, 192kHz) developments.

With MQA-CD, high-resolution music can be stored on a CD, and with downloadable music, download time can be shortened due to its light weight, and there is no pressure on the hard disk. An example of the amount of data that can be transmitted over the Internet using MQA is about 1.2 Mbps when the original is 176.4 kHz, which is slightly less than the 1.4 Mbps required for lossless streaming. This is slightly less than the 1.4Mbps required for lossless streaming. This means that high-resolution streaming is possible without changing the existing infrastructure. This shows that the MQA technology was targeted for streaming from the beginning.

In addition, while MQA is a proprietary technology, it is also compatible with conventional playback devices. In other words, MQA is better when used with MQA-compatible equipment, but it can also be used with equipment that does not support MQA.

To be more specific, an MQA-CD can be played on an ordinary CD player and expect CD quality sound. However, if you use a CD player or system that supports MQA, you can play it back in high-resolution quality even though it is physically the same as a CD.

Editor's Note: At this time, there are two types of MQA source data. The first is MQA Studio, which is MQA-ized by MQA itself, and the other is MQA-ized by TIDAL MASTERS and other distributors.

What are the technical points of MQA?

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