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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
"Beta 1 6.3.16??"
Posted By Tweed Guy on 07/01/2016
High I'm new here, thanks in advance for any advice. I picked up an unfinished build and the board that was included in the parts appears to be the Beta 1 version with 4 diodes. I know this is going ...

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"P1 Mods"
Posted By angeloprobst on 07/01/2016
Hi, everyone.

I decided to change some things in my P1.
It's done yet and I'm loving the result.
But I'm afraid if some component can be damage or if this circuit can put fire on my house :)


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"AES everything 10% off July 2016"
Posted By Darren Porter on 07/01/2016
Just in time... I was thinking I'd like to spend some of my summer school teaching money to build a new amp!...

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"Bugera Amps"
Posted By mac dilard on 06/30/2016
Anyone know about these amps? Sweetwater is selling a 50 watt head for $299 with free shipping

It runs 2 EL34s and 4 preamp tubes. It is the T50 Infinium. If you think at least $40 for shipping th...

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"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...

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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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* New Threads
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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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