What is a DAC and why do you need one?

What is a Digital to Analog Converter, and why do you need one? And how do they even work? What is an amplifier?:    • What does an amplifier actually do?   Read more headphone, IEM, amp, and DAC Reviews: https://Headphones.com/TheAudioFiles Glossary of Audio Design and Measurement Terms: https://headphones.com/blogs/features... Our Editorial Policy: https://Headphones.com/TheAudioFiles/... Join our Discord server: https://go.headphones.com/discord How to read the new measurements:    • A new standard for headphone measurements   The 10 stages of headphone measurements    • The 10 stages you’ll go through when learn...   0:00 - Intro 0:14 - Analog vs Digital 1:26 - Converting Analog to Digital 3:10 - Converting Digital to Analog 4:40 - Delta Sigma 5:55 - Do you need a DAC? 7:50 - Outro