Advanced DIY Audio Projects
The YAP Amp (Update is in progress)
The PGP Amp
PGP Amp Home | YAP Amp Home | Low Noise Home
Copyright statement:

By their use of these digital images and texts users agree to follow these conditions of use:

For purposes of research and teaching users may reproduce (print or download) in accordance with fair use materials without prior permission, on the condition they give proper credit of the collection owning repository

Materials may not be used for any commercial purpose without prior written permission from the copyright owners

Materials may not be re-published in print or electronic form without prior written permission from the copyright owners

Materials may not be mounted on an additional server for public use, or for use by a set of subscribers without prior written permission from the copyright owners
Last updated: Sep 9th, 2011
Welcome to my web site, dedicated to the world of DIY Audio.

Designing, building and testing (including auditions!) of any audio equipment that would qualify as "high end" is no easy job. You will find here detailed information that will hopefully help in achieving audio performances accesible so far to only a few initiated individuals and specialized companies. There is no free lunch - this level of performance is coming to a price, the price of complexity. Hence, none of the projects presented here is an easy ride -  however the satisfaction to tear down technological and psychological barriers is certainly worth the effort!

I personally do not enjoy complexity per se. Things should be as complex as needed, but not more than that! If there are ways to simplify these designs, while keeping the same level of performance, just let me know and I'll be happy to review any ideas!

It should be mentioned upfront that there's no business behind this web site. I do not sell any PCBs, parts and offer only very limited free support by email. There are only so many hours a day, I have a dayjob and a family to take care of! You can contact me with comments, blog account requests, questions, etc... at opopa at rogers dot com, but don't hold your breath for an instant response.
Low noise designs  
NEW*** I opened my own blog space ***NEW