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# mustardcapacitors.com

All about the famous mustard cap

## Sitemaps

- [XML Sitemap](https://mustardcapacitors.com/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [Blog](https://mustardcapacitors.com/index.php/blog/)
- [Tracking the Mustard Capacitor’s First Appearance](https://mustardcapacitors.com/index.php/2025/06/02/tracking-the-mustard-capacitors-first-appearance/) - Nailing down the mustard capacitor’s birthday feels a bit like chasing a shadow—every new photo or factory code shifts the timeline by a few months. To settle the matter we’ve gone full sleuth: combing through 1950s service manuals, company adverts, and—most revealing of all—close-up photographs of vintage circuit boards. Each stamped date code, each catalog
- [The Mustard Cap, a Colorful Piece of Electronics History](https://mustardcapacitors.com/index.php/2025/06/01/the-mustard-cap-a-colorful-piece-of-electronics-history/) - If you’ve ever taken apart a vintage radio, amplifier, or other electronic gear from the 1950s through the 1970s, chances are you’ve encountered a so-called “mustard capacitor.” True to its nickname, this capacitor is encased in a distinctive yellowish coating that evokes the color of classic deli mustard.It has achieved legendary status among collectors, audiophiles,

## Pages

- [Homepage](https://mustardcapacitors.com/) - Mullard Mustard Capacitors, Fueling Classic Circuits Since 1957 Thanks for stopping by MustardCapacitors.com, the gathering spot for anyone fascinated by the famous yellow Mullard Mustard capacitors. Here you’ll find lively posts on their origin story, the sonic character they add to tube gear, clever repair tricks, and a growing registry of amplifiers, radios, and studio
- [About](https://mustardcapacitors.com/index.php/95df2-about/) - About About MustardCapacitors.com MustardCaps.com began as a late-night conversation among a small group of vintage-amp techs, radio tinkerers, and tone chasers who kept bumping into the same yellow capacitors inside every classic British circuit they repaired. Those Mullard “mustard” caps always measured spot-on after fifty-plus years, and the gear that used them never sounded quite
- [Contact](https://mustardcapacitors.com/index.php/95df2-contact/) - Contact Us Drop us a line! Got a story, question, or fresh discovery about Mullard mustard capacitors? We want to hear it. Send a note through the form below and we’ll get back to you within one business day. Share photos of a rare find, pitch a guest post, or pass along test results from
- [Drop us a Line](https://mustardcapacitors.com/index.php/drop-us-a-line/) - Got a story, question, or fresh discovery about Mullard mustard capacitors? We want to hear it. Send a note through the form below and we’ll get back to you within one business day. Share photos of a rare find, pitch a guest post, or pass along test results from your latest rebuild. The best contributions
- [Subscribe](https://mustardcapacitors.com/index.php/95df2-subscribe/) - Subscribe for Unlimited Access Integrate a seamless subscription functionality with WPFullPay plugin Basic $2.99 Per Month Subscribe Unlimited article access Weekly newsletter Ad-supported reading Standard $5.99 Per Month Subscribe Unlimited article access Daily news updates Ad-supported reading Premium $15.99 Per Month Subscribe Exclusive investigative reports Ad-free experience Offline reading mode “... Neve's premium plan is
- [Mustardcapacitors.com](https://mustardcapacitors.com/index.php/mustardcap-com/) - Soon you will be reading everything you ever wanted to know about the famous mustard cap.Stay tuned!

## Categories

- [History](https://mustardcapacitors.com/index.php/category/history/)