Finding content created exclusively through a fully analog process is quite rare nowadays. Most sound engineers, mixers or creators now use CAM (Computed Assisted Music) or a digital console to create their content, allowing for easy editing and distribution through multiple mediums : CD, Blu Ray, streaming…This is all based on the digital LPCM format.
At home, your system will have access to this LPCM content and convert it to analog using DAC (Digital to Analog converters) so you can experience it through your speakers. In an audio chain, it’s not uncommon to have multiple devices, some of which perform tasks that were traditionally carried out in the digital realm, necessitating a transition from analog to digital again via Analog to Digital Converters (ADC). This multi-step conversion process can potentially compromise sound quality, introducing issues like noise. Consequently, it’s generally preferable to maintain a digital signal until the final stage in the speaker chain. Achieving this involves employing methods to transport the digital stream between devices, with various protocols available, including point-to-point and network-based solutions known as Audio over IP.
To read an in-depth article about digitalization of the audio industry, click here.