The pre-eminent forum for DIY Audio
Elliot Sound Projects is probably the most comprehensive resource for DIY articles and projects. Also sells project boards.
Canadian based supplier of amplifier boards, kits, and modules for DIY builds.
Information, resources and projects mostly related to headphone amplifiers with the beginner in mind.
Information, resources and projects mostly related to power amplifiers with the beginner in mind.
Website of RJM Audio that has projects, kits and boards available. I have built the Sapphire 4 headphone amplifier and highly recommend it.
UK based Audio projects, articles and utilities with some components for sale.
UK based site that has some in-depth articles about projects and audio fundamentals. Also sells PCBs and populated boards at a very reasonable price.
Quite an eclectic site with lots of audio projects available (amongst others) including Gerber files.
Part of a wider electronics and computing site but a fair amount of audio here. The build guides are extremely well detailed, have a look at the authors LM3886 for instance. Also has a very good article on wiring transformers, excellent for novices.
Projects with detailed build guides.
Exactly as the name suggests.
Collection of articles and guides.
Tribute site to Pow Chu Moy, founder of HeadWize and the original CMoy headphone amplifier. Plenty of projects saved from the original site.
An interesting site of electrical theory with lots of information for audio enthusiasts including amplifiers and powers supplies. There is a nice step by step section on designing your own Class A amplifier.