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This website contains information related to the home building of vacuum tube amplifiers, including a free download of the book Vacuum Tube Amplifier Basics as a PDF document/eBook. This site is owned by EJ Jurich, author of the book. As time goes by, pages with useful information will be added to this site. A current project is being spotlighted that, when finished, will be linked in the menu at the bottom of the page.
This project is to see if a four-watt-per-channel amplifier using 6SN7s as output tubes is practical.
6SN7 Amplifier Project
Using sound pressure levels to determine amplifier output wattage that produces sound levels suitable for home audio systems.
Why They Make Sense
EDN article on amplifier power
This current version of the book includes technical information from previous versions plus a more detailed example of amplifier
design and assembly. Using a concise format, 110 reference pages cover technical information that pertains to vacuum tube circuits.
Design examples take you through the steps of fabricating a traditional chassis layout and the build of a Class A stereo amplifier
(pictured on the book cover).
More details and to view or download the book
This current version of the book includes technical information from previous versions plus a more detailed example of amplifier
design and assembly. Using a concise format, 110 reference pages cover technical information that pertains to vacuum tube circuits.
Design examples take you through the steps of fabricating a traditional chassis layout and the build of a Class A stereo amplifier
(pictured on the book cover).
More details and to view or download the book
Russell O Hamm paper, tubes versus transistors Class D, Class A & Class AB Loudspeaker distortion Selecting capacitors for the best performance Amplifier damping factor Push-pull balance - W T Cocking Cathode follower output Amplifier design for tube rolling 12AT7 Balanced input Half-watt 6SN7 headphone amplifier
Danger High Voltage
be careful where you put your hands
This is the home page for EJ Jurich
author of the book
Vacuum Tube Amplifier Basics
© 2014 -
All Rights Reserved.
EJ Jurich
PO Box 3416
Des Moines, IA 50316
last update 09/18/2025
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