Audio amp classes as fast as possible!

What is the actual difference between a Class A, Class AB and Class D amplifier? GoldenSound breaks them down in under 10 minutes!

Transistor Biasing Explained: https://www.electronics-tutorials.ws/amplifier/transistor-biasing.html
Class D Amplifiers (Analog Devices): http://www.analog.com/media/en/analog-dialogue/volume-40/number-2/articles/class-d-audio-amplifiers.pdf
Crossover Distortion in Amplifiers: https://www.electronics-tutorials.ws/amplifier/amp_7.html
Class AB Amplifier Design and Biasing: https://www.electronics-tutorials.ws/amplifier/class-ab-amplifier.html

DACs 101: https://youtu.be/HOvubnenXyo
Amps 101: https://youtu.be/--LEDxMs4yk

Read more headphone, IEM, amp, and DAC Reviews: https://Headphones.com/TheAudioFiles

Glossary of Audio Design and Measurement Terms: https://headphones.com/blogs/features/the-glossary-of-audio-measurements-and-terms

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How to read the new measurements:
https://www.youtube.com/watch?v=QWS-hIzI1KU

The 10 stages of headphone measurements
https://youtu.be/LrIoNMeo_GI

0:00 - Intro
0:50 - Transistors
2:16 - Biasing/Class-A
3:49 - Class-B
5:12 - Class-AB
6:24 - Class-D
9:04 - Conclusion