@jimrrobbie1 I’ll try to make this easy to understand
The analog signal is changed (sampled) to a digital signal using by using a translator (ADC - Analog to Digital Converter) for file storage and delivery purposes.
So for you to play digital music, you’ll need 3 things:
- Music file source (CDs, server, data from a streaming service uses servers)
- Delivery method - streamers
- Translation back to analog (DAC= Digital to Analog Converter)
To summarize, you need a server (somewhere, could be at a streaming service), streamer, and a DAC.
Some audio components have multi functions like my streamer+DAC. Some components may have all 3 functions. Usually, if you plan to upgrade, it’s best to keep the functions separate.
Other “optional” sonic enhancements include upgrading power supplies, clocks, usb and Ethernet in-line filters, audiophile switches, optical isolation, etc.