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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
"bunch of tubes"
Posted By J Wiggins on 09/01/2014
I have a bunch of tubes that my father in law gave me, thinking of trying to piece an amp together with surplus tubes.
Tubes are:









Discuss this entry
"Bulletproof adjustable fixed bias."
Posted By roystonoboogie on 09/01/2014
Howdy folks! Long time no see. I've been busy reworking my double bass amp and having a hoot doing it.

The amp is now a 1x12" combo, and it seems that the components in a combo take a bit more of a...

Discuss this entry
"A stab at a Daisycutter"
Posted By Borgar Dahle on 08/31/2014
for some time i wanted to build a tube amp.
I've been messing with it for a while, but i wanted to have some results before posting.

I'm an electronics technician, but i have little experien...

Discuss this entry
"A little recording sample."
Posted By JeffW on 08/31/2014
I have been slowly learning how to use Studio One and trying to get back to recording after a long gap. Seems like good software so far. The drums are from Studio One, bass is direct using built in ...

Discuss this entry
"Return To Solid State"
Posted By Douche Baggins on 08/30/2014
Downsized from a 3/2 SFH to a 2/2 condo four months ago and had to downsize my guitar volume as well. I'd been looking at a few modeling amps for the past 6 months and was near purchase on a Fender Mu...

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Site News

2012-2-25: Winter is almost over. What's on your workbench?

2011-10-10: Some good discussions about LTSpice in the forums again, as well as suggestions on what all to do to a P1-eXtreme.

2011-10-10: What all can you do with a P1-extreme? check the forum

2011-10-7: Don't forget to like us on Facebook!

2011-08-11: Posted some Single-Ended Lead clips in the Classic Amp Projects->SEL section. Hundreds built but now we've got clips. Check out the archived projects section for more clips.

2010-10-22: Be sure to check out our discussion forum using the link on the left..

2009-07-01: 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.

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