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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
"AX84/Heyboer SE OT Production Run"
Posted By Chris Hurley on 11/24/2014
I've been out of stock on our fantastic Heyboer/AX84 Single Ended Output Transformer for about a year. I don't even have any stashed for myself, so I'm thinking about having another batch made. If a...

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"merlins serial/parallel looop"
Posted By arjepsen on 11/24/2014
I just put together an october club, and implemented the parallel/seriel loop with a mix pot, as Merlin describes in page 220 in the book second edition of his book.
It works well at the pure serial ...

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"What to do with a broken Champ..."
Posted By JHarris on 11/23/2014
Hey all,

I messed up and damaged my Silverface Champ's OT. These amps use an RCA connection to the speaker and with corrosion + use, they wear out and can lose connection. If you've been away from...

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"LEDs for Blues Pre"
Posted By DutchMarco on 11/23/2014
I'm ooking to order bits for my Blues Pre + 20W SE + VVR. I wanted to order bits from here:
[link] (because that'll allow me to get the IRF820 for the VVR, to...

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"trouble shooting some unwanted distortion"
Posted By cameron nicklaus on 11/22/2014
man oh man I'm stumped.
this is a straight up PR clone...It sounded fine except for when I record it I hear a bit of distortion even at relatively low volumes. I almost can't detect it when just lis...

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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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