http://www.quadesl.com/index.htmlI enjoy reading Sheldon blog on audio project many years ago, actually at that time was tempted to DIY his DAC project using CS4329 DAC when this DAC chip was just available in the market. He got a lot of interest DIY audio project and he is willing to share his design with hobbyists and designers. He works for Creare - an advance R&D scientific company that work on NASA Hubble space telescope, and audio is his side hobby.
Enjoy the read...
