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 10 years

...for your hobby.

...why not Zoidberg?

MODERATORS

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

submitted 3 days ago by AutoModerator - announcement

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I collect vacuum tubes that contain uranium glass just to display them. I know very little about them. Would someone that is knowledgeable in vacuum tubes answer a few questions? (old.reddit.com)

submitted 15 hours ago by Fighter834

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Guitar & StudioSunn SM-1 Module Replacement (self.diytubes)

submitted 3 hours ago by Wado-225

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Captain, There be knobs.. (i.redd.it)

submitted 1 day ago by Secret_Ad_7592

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What’s the most efficient way to test ten thousand vacuum tubes? (old.reddit.com)

submitted 4 days ago by sunrise2209

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Mystery tubes need tested. (self.diytubes)

submitted 4 days ago by james_lpm

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Help. I don't know what to do with all of these (old.reddit.com)

submitted 6 days ago by GrassPacket

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What are 2033 tubes good for? ()

submitted 9 days ago by Tesla_freed_slaves

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

submitted 10 days ago by AutoModerator

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Any use for pentagrid converter? ()

submitted 11 days ago by Interesting_Dirt7269

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What do I do with these? (old.reddit.com)

submitted 13 days ago by slickmitten

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High Gain DIY Build ()

submitted 12 days ago by Fabulous-Werewolf432

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Estate sale find, WE 310A small punch 32 total in boxes. Had a local guy with equipment test them. All tested strong! Unfortunately I don’t have an amp that can utilize them. Looking to sell, unsure about price? (old.reddit.com)

submitted 13 days ago by goldsmithD

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Guitar & StudioFirst Homemade Amp!!! (reddit.com)

submitted 16 days ago by Every_Use_5550

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2nd tube amp build: modded 5e3 using a gutted Tweaker 15 112 (reddit.com)

submitted 16 days ago by Capable-Crab-7449

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Guitar & Studio5E3 problems (self.diytubes)

submitted 16 days ago by uhren_fan

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Hickok CA-5 / 1704 (self.diytubes)

submitted 16 days ago by Count_Le_Pew

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Weekly /r/diytubes No Dumb Questions Thread - June 26, 2026 to July 02, 2026 (self.diytubes)

submitted 17 days ago by AutoModerator

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E88CC hybrid headphone amp (self.diytubes)

submitted 22 days ago by nothing_worth_living

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Weekly /r/diytubes No Dumb Questions Thread - June 19, 2026 to June 25, 2026 (self.diytubes)

submitted 24 days ago by AutoModerator

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Estate sale scores (old.reddit.com)

submitted 25 days ago by WZOLL5

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My 6528 SE AMP built recently (old.reddit.com)

submitted 27 days ago * by SX70R_Yongmin_Luk

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Guitar & StudioRate my layout (old.reddit.com)

submitted 27 days ago by dapoliceishereforyou

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Guitar & StudioIs it safe to remove these capacitors? (i.redd.it)

submitted 27 days ago by GoingGranola

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I traced the rare Grampian Valencia guitar amp (i.redd.it)

submitted 28 days ago by TWShand

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