Audio Tube Noise Measurements May 07 2015

We are now posting and maintaining a list of noise measurements made on current production (and a few new, old-stock) audio vacuum tubes. It includes popular types such as 12AX7, 12AT7, 5751, and 6DJ8, and it will include more in the future. See our Downloads page for details, and let us know if there are other brands or types you would like to see included.