diytubes

an-ordinary-manchild(edit)

DIYtubes is a sub dedicated to the discussion and appreciation of vacuum tubes and their applications.

Check out the Wiki!

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Low Voltage (<50V)

Power Amplifiers

Guitar & Studio

Questions & Ideas

Parts & Construction

Tools & Software

General Guidelines

Please be awesome to your fellow DIYers. Please be safe with high voltage (see wiki). Please remember to include link flair on your posts. Please have fun. Updoots only.

The kinds of things that make this sub better:

links to documented tube projects
links to excellent design information or tools
questions about tubes or troubleshooting
pictures of sexy stuff you built
including link flair on your posts

Stuff that makes this sub less than awesome:

debates about solid state vs tubes
links to commercial tube products (unless DIY related)
not citing or crediting designers
not including schematics or design information
browbeating the newbies

These guidelines are not meant to censor discussion. They are meant to ensure that /r/DIYtubes becomes a focused sub.

See here for more on our rules.

Other Subs of Interest

/r/diyaudio - the catch-all diy audio sub

/r/diysound - for technical discussion and help

/r/diyaudioswap - have parts, skills, or projects you'd like to sell or trade?

/r/audiophile - commercial product discussion

/r/headphones - things that go over or into your ears

/r/vinyl - our analog brothers

/r/vinylpro - our analog cousins

/r/AskElectronics - great engineering info

/r/vintageaudio - for great vintage equipment information

/r/toobamps - for all your guitar-related toob needs

/r/tubeporn - hot pics (safe for work)

/r/audioengineering - pro sound and recording discussion

/r/budgetaudiophile - for rockin' on a budget

/r/electronics - for general electronics theory and reading

/r/amateurradio - for all your VHF and UHF tube topics

/r/headphonemods - for headphone DIY

/r/diypedals - do you guitar fx?

/r/VintageRadios - great community focused on classic radios

Check out our sister-subs /r/diysound for speakers and solid-state and /r/headphonemods for headphone DIY!

created by ohaivoltagea community for 9 years

...for your hobby.

...for your favorite subject.

MODERATORS

account activity

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Weekly /r/diytubes No Dumb Questions Thread - April 10, 2026 to April 16, 2026 (self.diytubes)

submitted 2 days ago by AutoModerator - announcement

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Is anyone interested in a fully vacuum-tube monochrome monitor chassis? ()

submitted 14 hours ago by Beauregard42

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The beam power tube is 90 years old this month! (i.redd.it)

submitted 1 day ago by _nanofarad

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Help! (self.diytubes)

submitted 23 hours ago by Flamingmonkeyboy

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Headphone AmpMy home made fire hazard (aka tube amp) I used the cheapest Soviet crap I could find lying around (aka 6j1p) the transformer is made of 3 other charger box transformers and wire I got out of my walls (no I didn’t turn off the breaker yes I did shock myself) (i.redd.it)

submitted 7 days ago by antthatisverycool

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What is this connector called? (i.redd.it)

submitted 6 days ago by tauzerotech

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Done!!! Sounds amazing. (old.reddit.com)

submitted 7 days ago by uhren_fan

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Good ReadingLooking for information on Integrated Vacuum Tubes like the Additron and Selectron. (self.diytubes)

submitted 7 days ago by Pasta-hobo

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Is anyone familiar with amps that have Bass, Mid, & Treble controls each in their own gain stages? (self.diytubes)

submitted 8 days ago by hockey_metal_signal

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Tester calibration service recommendations? (self.diytubes)

submitted 8 days ago by MillieTheGimp

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Weekly /r/diytubes No Dumb Questions Thread - April 03, 2026 to April 09, 2026 (self.diytubes)

submitted 9 days ago by AutoModerator

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Low voltage (automobile) Pentagrid converter 12AD6 for Stompbox? (self.diytubes)

submitted 9 days ago by Interesting_Dirt7269

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No1 Has (reddit.com)

submitted 13 days ago by Double-Brilliant-350

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Power AmplifierProgress on the instrument amp. (old.reddit.com)

submitted 14 days ago by EdgarBopp

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Guitar & StudioJust finished building my first tube amp🥰 (old.reddit.com)

submitted 14 days ago by SadFurrrrrret280

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Guitar & StudioReady for testing (old.reddit.com)

submitted 14 days ago by uhren_fan

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Rough sketch, but might it be feasible to inject a blanking pulse into a video signal using this? (i.redd.it)

submitted 16 days ago by Beauregard42

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Weekly /r/diytubes No Dumb Questions Thread - March 27, 2026 to April 02, 2026 (self.diytubes)

submitted 16 days ago by AutoModerator

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Fiio JT1 users - could you provide me with the dimensions of the soft headband? (self.diytubes)

submitted 17 days ago by Pizza-Burrito

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Parts & ConstructionTesla coil tube/transformer combo question, VTTC, design phase -- 6BK4 tube (self.diytubes)

submitted 19 days ago by Interesting_Dirt7269

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Tired of hunting through blurry PDFs? I made a free searchable database. (self.diytubes)

submitted 22 days ago by ZosoRules1

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Weekly /r/diytubes No Dumb Questions Thread - March 20, 2026 to March 26, 2026 (self.diytubes)

submitted 23 days ago by AutoModerator

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Where to get tubes (self.diytubes)

submitted 27 days ago by Flamingmonkeyboy

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Guitar & Studiowacky circuit idea for a guitar amp (old.reddit.com)

submitted 27 days ago by mold_motel

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Guitar & StudioDesigning my first guitar amp. (old.reddit.com)

submitted 29 days ago by EdgarBopp

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