"Like" AX84 on facebook

Account Info
Greetings, Guest.

Reset Password
Create New Account

Browser cookies are required for these functions.

Welcome to AX84® the base camp for tube (valve) electronics hobbyists.

AX84 exists to provide:

1) A great environment to learn about music-related electronics in general. AX84 is a place where those with experience are interested in helping diligent beginners who are willing to do their homework.

2) A place where those with more experience can field their ideas to peers and get useful feedback.

3) An environment that respects the past, but is not enslaved by it. INNOVATION IS GOOD (and it didn't die in the 1950s.) There are new things under the sun every day. Move the ball forward!

Our HUGE discussion area is under 'Discussion Forum' to your left.

We are hard at work improving the site- check back often!

Recent Forum Threads
"Diagnostic Troubleshooting"
Posted By Denny Gracey on 06/28/2016
My Uber build sounds amazing when it's working. It's also my 'lab amp' that I'm constantly trying new things as learnings. I have a recurring symptom with an elusive cause: Signal goes thin and buzz...

Discuss this entry
"Advice on preamp line out"
Posted By DustyRusty on 06/28/2016

Posted a couple of times here. I'm new to messing around with amps and would like to one day build one. I'm first making some basic mods to my existing amp to increase my knowledge/ skills.

Discuss this entry
"4-4-0, and other ideas. "
Posted By mcneb on 06/27/2016
Has anybody built the 4-4-0 using other output tubes? (Or was that project specific to a low watt build?) If so, any schematics to share. Anybody ever used a VS83 tube for a build and how did it turn ...

Discuss this entry
"EF86 Internal Shield"
Posted By Tim Hall on 06/26/2016
This is the first time I've used an EF86. I'm plugging away at a layout right now, and just noticed this tube has an internal shield. (I didn't even bother to look at the pinout while working out the ...

Discuss this entry
"Suggestions for Switching EL84/6P1P"
Posted By Tim Hall on 06/24/2016
I have an PP pair EL84, cathode bias amp that I'd like to be able to drop in 6P1P's (I have a dozen or so of these I've never used). I'd need to switch the bias resistor, control grid, and the anode c...

Discuss this entry
Like us and Find us

Subscribe to me on YouTube

Site News

2014-10-21: Be sure to check out our discussion forum using the link on the left..

2014-10-20: The Treasure Fleet is on the way to Rio De La Hacha with a fortune in gold!

We're looking for media clips of recent builds... please stop by the forum and respond to the thread.

2008-10-4: Archived Projects section is functional again.

2008-9-18: RSS Feeds for the forum have been up for a while, but not advertised...
* Active Threads
* New Threads
* Recent Posts

2008-6-26: Want to participate in our discussion forums? You are welcome to read and lurk as you like. If you think you'd like to post with regularity, please sign up for an account.

AX84® is a registered trademark of Doberman Music Products, LLC. AX84.COM content may not be reproduced without the express written consent of Doberman Music Products, LLC (sales@dobermanamps.com).
For information about using the AX84® trademark, project names and designs, click here