Articles of Interest

These articles are reprinted with the permission of the author and/or publication. You may find them useful if you want to learn more about the sound of vacuum tubes and other professional audio subjects.

Tubes vs Transistors: Is there an audible difference?

by Russell O. Hamm

Journal of the Audio Engineering Society
May 1973

Russ Hamm’s research was the first to quantify the objective and subjective differences between vacuum tube and solid-state audio circuitry.

Why Vacuum Tubes?

by Douglas W. Fearn

Pro Audio Review
Jan/Feb 1996

Why vacuum tube audio circuitry sounds better than solid-state in many applications.

How to purchase our products