SPDIF, TOSlink, AES/EBU or I²S, what’s the best?

What digital interface is the best? This is a question that is often posted on this channel. When it passed again last week, I found it time to explain the differences and try to weapon you with knowledge so you can decide for yourself.

Contents of this video

00:00 - Intro
00:23 - Start of program
00:57 - The AES-3 interfaces
02:01 - Bi-phase mark
05:41 - Physical level
06:51 - The subcode
07:54 - The quality
08:52 - USB Audio
09:33 - Audio Class 1
10:58 - Audio Class 2
12:00 - The quality
12:59 - HDMI for audio
14:29 - I²S is not HDMI
16:24 - The wrap

Relevant videos:
About my reference setups:https://youtu.be/JM5XIOb6d8g

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About Questions: https://youtu.be/YCNnUq6SbKg
Q&A: Which device is better?: https://youtu.be/BzLmC4n2DX4