We are pleased to note that Gary Galo has recently made a very large Guest Contribution to this website. This is in the form of a series of his notable preamp modification articles, that appeared in AudioXpress. The articles are listed below in the sequence they appeared. Click the individual link for a given article. A ZIPfile with all the articles is available as well, at the end.
The four (+) part series on modifications to the Adcom GFP565 preamp:
It is a real pleasure to be able to make this landmark series of preamp articles available to the readers of this website.
Our thanks to Gary for making all of this possible, and for executing some superb examples of true DIY craftsmanship!