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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
"Weird problem happened this week-end"
Posted By GuiteLectrique on 05/03/2016
Hi Folks,

I had a weird oscillation/feedback/microphony problem at a gig last week-end and I was wondering if you guys have a hint. During the middle of a song, my guitar started to make a high pit...

Discuss this entry
"Anyone ever used KT150's?"
Posted By Alva Goldbook on 05/03/2016
I've been planning on building an all tube bass amp for a while now. It's still in the planning stage, and I've been thinking about the power amp design. While I do want a little bit of head room, the...

Discuss this entry
"USB foot controllers for YouTube videos"
Posted By Ken Moon on 05/02/2016
If you're like me, you may have used YouTube videos to learn some songs.

I particularly like the "Riff of the day" lessons by Andy at ProGuitarShopDemos, but it's a PITA to keep reaching for the mo...

Discuss this entry
"Good 12V Preamp Design"
Posted By musicisphysics on 05/01/2016
Has anyone here ever build (or seen a schematic for) a nice little 12V preamp using those old car-battery tubes (i.e., 12EK6, etc.)?...

Discuss this entry
"Po' Boy's sources for quality parts!"
Posted By CChurchill on 05/01/2016
It isn't easy to avoid compromising ones design goals in any project when budget limitations restrict access to resources (either tools or components). I've learned that with flexibility, patience, an...

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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...
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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).
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