In this tutorial, we will cover most critical Class D design aspects to distinguish between good class D amplifier designs and bad ones.
Based on this knowledge, you will understand why one eBay class D amplifier model sound great and others do not.
This tutorial is based on largest chip manufacturer companies' publicly available applications notes and reference designs documents.
Most of good eBay Class D amplifier boards are simplified large manufacturers' reference designs. Special Thank You to International Rectifier/Infineon and Texas Instruments engineers for a well-structured and most completed set of documents. For those listeners who have an Electronic Engineering background and willingness to study more, I have added links to source documents at the end of this tutorial.