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?: 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 Our Editorial Policy: https://Headphones.com/TheAudioFiles/About Join our Discord server: https://go.headphones.com/discord 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 0:14 - 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