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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
"P1-eXtreme vs Marshall preamp"
Posted By Henrik Lidbjrk on 02/01/2015
I'm trying to design a simplistic Marshall-esque amp based on the P1 eXtreme, keeping the SE octal tube power amp, but perhaps doing something different with the preamp. I'll probably simplify it to 1...

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"OCD wood work"
Posted By tedmich on 02/01/2015
Since there are some perfectionists here I thought I'd pass on some amazing wood sculpture I'd run across.

Guys name is Randal Rosenthal and he makes some incredible stuff out of a single piece of ...

Discuss this entry
"choke or no choke?"
Posted By Dan Moos on 01/31/2015
I have never used a choke in a build, and am noticing few here seem to. I've never really seen what the practical advantage is. Less voltage drop to the screen supply node, but I don't see that being ...

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"Doberman 20wt and 1 ohm res."
Posted By tdmur on 01/30/2015
Hoping you can tell me if I am on the right page in regards to these two issues or if I crossthreaded my neck trying to screw my head back on.The Doberman has multiple taps on both the pri. and sec. ...

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"October Club Options"
Posted By Paragon on 01/30/2015
Hello, all.
Working on the planning stage for this amp. Iron will be old salvaged Hammond stuff as usual.
Wondering what the consensus is on the Vintage/Modern, NFB Resonance and Master options. I...

Discuss this entry
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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.

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