For those interested in DIY or professional repair, major suppliers like Mouser Electronics Bulgaria provide a massive selection of audio ICs and Class-D controllers. Audio Amplifier - an overview | ScienceDirect Topics
Use a 3.5mm mini phone plug to dual RCA cable to connect the PC to the "Aux" or "CD" input of your amplifier. For those interested in DIY or professional repair,
You can find a wide range of computer-compatible amplifiers at eMAG or Radoslav Music. For those interested in DIY or professional repair,
The most common way to integrate an amplifier into your setup is via the jack (usually green) on your sound card. For those interested in DIY or professional repair,
For better sound quality, many users prefer using a USB connection to an external DAC/Amp combo, which bypasses the noisy internal sound card entirely. Types of Amplifiers for PC Use