Have you tried building a small audio power (say 5W) recently?
All of the ST series of chips have been discontinued by ST Micro and second manufacturers have also dropped the full range. It seems that if you want to build a small amplifier you MUST use a Class D device, which is bad news if you want a single ended audio output referenced to ground.
Any ideas what can replace a TDA2002, or a TDA2003 that is NOT a Class D device?