I want to enjoy Loseless/High Resvo with Apple Music! -Is it a 2nd Bluetooth?

Regardless of how you feel, Bluetooth audio does not support Loseless/High Reserve.

What are the items required for Loseless/High Resolution Play?

So, as of June 2021, there are three options for loseless/high -resolution playback on the iPhone that has to choose a wired/Lightning connection.One is the "headphone conversion adapter with a built -in LAM", the other is "Lightning Connected Headphone/Earphone", and the other is "USB DAC".

The LAM here is "Lightning Audio Module", an IC with a built -in digital/analog conversion circuit (DAC) specified by Apple.This LAM is always installed on the device that can output the MFI (MADE for iPhone) logo.

Although there is no MFI logo because it is an Apple genuine product, "Lightning -3" was treated as accessories from iPhone 7 to X..The 5mm headphone jack adapter is no exception."Lightning connection type headphones/earphones" listed in the second option are also 3.It is a device with LAM just because there is no 5mm jack.

LAM has a maximum of 48kHz, which can be output, and 24 bits.The sound source of 48kHz/24bit, which is considered to be a so -called high -resolution minimum spec, as well as a so -called high -resolution minimum specification, can be played without any loss of information.So CD sound quality (44) that accounts for most of Apple Music's lossless sound source.1kHz/16bit songs can be used with "headphone conversion adapter with a built -in LAM" or "Lightning -connected headphone/earphone".

However, if you enter a sound source that exceeds the LAM specifications such as "96kHz/24bit" or "192kHz/24bit" with these two types of devices, you will be down sampled to the upper limit (48kHz/24bit).Specs are compatible with lossless/high resolution...It can be said that it is an introductory machine that stirrts the interest in "further up".

If you listen to high -resolution, "USB DAC"

Audio has the standard of "sensual evaluation" that cannot be simply measured by performance, and delicate lossless/high -resolution playback that is so effective that some people will not feel the effect should be described on that criterion.To do so, you need to stick to tools.

Even if the first two options are compatible with Loseless/High Resolution (but 48kHz/24bit), it is a story on the specifications.LAM has a strong tendency to emphasize performance such as size and power consumption, and there is an existence of "further higher", whether a DAC part is converted to an analog signal or an amplifier that amplifies the converted analog signal.

In this case, "further up" means the third option "USB DAC".USB DAC is a device that converts/plays digital signals in accordance with USB audio standards (USB Audio).There are a wide variety of things, many different differences.Select according to your budget.

If you output the sound of Apple Music to the USB DAC, the options in the sense of pursuing sound quality will be greatly expanded.There is no drill, but it is natural to have a DAC and an amplifier to a separate dedicated IC, which assigns a DAC to each LR channel, prepares an amplifier IC with a low distortion rate, and is a standard for audio playback.This device is a device that makes the IC (clock) that measure the time ultra -high -precision or to aim for "further up".

To use a USB DAC on the iPhone, you need a "USB OTG" function that allows USB peripheral devices to behave as a host.The orthodox method is to prepare a conversion adapter called a "USB camera adapter" and connect it with a USB DAC with a USB cable.On the iPhone side, on the "Settings" → "Music" → "Audio Quality" screen, it is OK to prepare if "Loseless" or "High Resolo Superless" is selected for the listening method.