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Tube amp building information


The EL34 World Tube amp Library of information

Click the link above for Tube amp info, Tube amp schematics, Tube amplifier circuit board building information,
tube projects, Amp mods, Tube amp transformer diagrams, Photo's, Sound clips.
There are hundreds of pages of Tube amp information on my library page.

Tube amp schematic Tube amp Layout diagram
Check out the huge library of Guitar Tube amp schematics,
effects schematics and many other types of schematics

The Tube Amp Schematics Library




Please visit my Tube Amplifier Forum

Here's the place you can go to ask tube amplifier questions.
You will find a large community of friendly tube amp builders at the link above.
This is the place to go for tube amp building help and information.



My Tube amp parts catalog is on Hoffmanamps web site
You can go here to browse my tube amp parts catalog, or use the scrolling image browser above.


Hi, my name is Doug Hoffman
The EL34, in EL34 World, refers to my alias, which I have been using since 1999.
I first used EL34 as my gaming name when playing Quake 3 at LAN parties and on the internet.
I had to come up with some sort of alias and EL34 is what I came up with. :)
A EL34 is also a very popular power tube for many amplifiers.

I own several web sites that contain information about vacuum tube Guitar tube amps.
Hoffman Amplifiers is my Web store site for tube amplifier parts and SSC P7 LED bike light parts.
EL34World is my Main information site for many different subjects.
Click on the big button up above to go to my Web store on Hoffmanamps web Site


Check out some of my other hobbies and projects

My amps and guitars
Behringer FCB1010 mods and info
Controlling Guitar Rig with the FCB1010
Guitar Rig setup info
Sound setup and recording info
Windows mixer info
Mixcraft recording info

Sound Clips page
Sound clips and tunes of all types

Making a 3D Printer from scratch

DIY High Powered LED Bike Lights and Mounts

Converting a UPS to use deep cycle marine batteries

Making a custom game controller

Dallas one wire weather station

X10 Home automation

My veggie garden

My CNC machine and CNC projects

My Stirling Engine experiments

My Solar Greenhouse experiment

My Bikes

GPS stuff

Guitar Neck jig tool used for fret leveling

My USB foot controller experiment
Hack a USB keyboard to be able to control software with your feet

Hacking a ink jet printer to print on Copper clad PC board material

My Dogs - Cheyenne and Gaia


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Home - Ordering Information - Ordering Information - PayPal info - Returning parts - Search the Hoffman Amps parts catalog
What's New - Q and A - Links - Shipping Info/policy - E-mail Me - Amplifier Service Technicians - About Hoffman Amps
Sound Clips - LED Bike light build info - Guitar Rig and Behringer FCB1010 info
Create your own custom Turret lug board

The Tube amp Library of information - Charts - Diagrams - How To's - Projects
Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photo's, Sound clips.
There are hundreds of pages of Tube amp information on my library page.
Check out our huge library of Tube Amp Schematics here

Please visit my Tube Amplifier Forum
Here's the place you can go to ask tube amplifier questions.
You will find a large community of friendly amp builders at the link above.

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