Here is a list of links that you may find useful in completing your chipamp projects:
DIY Audio Forum – One of the largest knowledge bases of DIY Audio projects, chipamps, tube amps, and beyond!
Audiosector – High quality kits for the LM3875 and LM4780 ICs. They are the design of Peter Daniel.
DAL Audio Products – High quality finished amplifiers, some of which utilitze our products!