The first "sound card" for the Raspberry Pi that I came across was made by the Swiss business HifiBerry. Since then, a lot has changed, and while the firm still focuses on high-quality, low-cost items, its most recent launch is a step up.
Contents of this video
00:00 - Intro
00:22 - Start of program
00:12 - Where to use
01:44 - The outside
02:37 - The circuit board
03:51 - The difference
04:58 - Sound quality
05:52 - On the use
07:45 - The wrap
Manufacturer:
https://www.hifiberry.com