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EJ Jurich

EJ Jurich

This is the home page for
EJ Jurich
author of the book
Vacuum Tube Amplifier Basics

Experimental vacuum tube amplifier using 6SN7 as output tubes providing four watts per channel.

Current Project
6SN7 as output tube

This project is to see if a four-watt-per-channel amplifier using 6SN7s as output tubes is practical.
6SN7 Amplifier Project

Vacuum Tube Amplifier Basics

Vacuum Tube Amplifier Basics by EJ Jurich, a book for beginners. Second Edition with more detailed amplifier design and construction.

Vacuum Tube Amplifier Basics

Vacuum Tube Amplifier Basics by EJ Jurich, a book for beginners. Second Edition with more detailed amplifier design and construction.

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 designing a Class A stereo amplifier (pictured on the book cover).

The book as a file download

Save $$$$$$

The file download version of the book Vacuum Tube Amplifier Basics has a price reduction of 50% for the month of July, 2025.

Low Power Amplifiers

Using sound pressure levels to determine amplifier output wattage that produces audio levels below ear-damaging levels.
Why They Make Sense

Russell O Hamm paper, tubes versus transistors Class A & Class D Amplifiers Loudspeaker distortion Selecting capacitors for the best performance Amplifier damping factor Push-pull balance - W T Cocking Cathode follower output 12AT7 Balanced input Half-watt 6SN7 headphone amplifier

vacuum tube amplifier safety

Danger High Voltage
be careful where you put your hands

© 2014 -
All Rights Reserved.
EJ Jurich
PO Box 3416
Des Moines, IA 50316

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last update 07/06/2025

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