{"product_id":"300b-triode-vacuum-tube-patent-diagram-mug-for-tube-amp-builders","title":"300B Triode Vacuum Tube Patent Diagram Mug for Tube Amp Builders","description":"\u003cp\u003eCelebrate the art and science of high-fidelity tube audio with this meticulously detailed 300B triode exploded-diagram mug, rendered in authentic 1940s engineering patent drawing style on a warm aged-cream background. Every internal component — cathode, anode plate, filament, grid wires, glass envelope, and base pins — is precisely labeled with its exact technical name and annotated with electron-flow arrows, just like the original draftsmen intended.\u003c\/p\u003e\u003cp\u003eA delicate oscilloscope waveform border frames the illustration, while hand-drawn corner vignettes of a soldering iron and voltmeter add that unmistakable workshop atmosphere. Whether you're biasing output stages at midnight or debating plate dissipation on diyAudio, this mug belongs on your bench.\u003c\/p\u003e\u003cp\u003eThe 11oz ceramic mug features a durable, dishwasher-safe glaze that keeps the sepia linework crisp cup after cup. It's the perfect companion for the audiophile who treats tube selection as a near-spiritual discipline and wants their morning coffee served with a side of electron physics.\u003c\/p\u003e\u003cp\u003eMakes an exceptional gift for any DIY hi-fi builder, vintage electronics enthusiast, or anyone who knows that the 300B is not just a tube — it is a way of life.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"11oz","offer_id":49008569123065,"sku":"85461719168423362833","price":22.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/1469\/1833\/files\/17728124367441088246_2048.jpg?v=1788499138","url":"https:\/\/www.nunezcraftscreations.com\/products\/300b-triode-vacuum-tube-patent-diagram-mug-for-tube-amp-builders","provider":"NunezCraftsCreations","version":"1.0","type":"link"}