Atma-Sphere is world renown for fantastic their OTL amplifiers. In this video they use stop-motion animation to provide us with a look into how the award-winning Atma-Sphere M-60 power tube amp is hand assembled. If…
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During a recent visit to China we dropped by the Shuguang tube factory located in the city of Changsha, Province of Hunan. On every visit to the factory we ask to take photos and video…
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A number of years ago we started to see more and more about cryo “treatment” of vacuum tubes. We read through all the marketing and tried to figure out how this could improve a vacuum…
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A re-post from Phil Taylor of Effectrode.com I’m not a metallurgist nor a physicist but as an audio electronics engineer I’ve a vested interest in anything that might help improve the sound quality and reliability of…
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If you’re a serious audiophile with tube gear chances are you know the names Balanced Audio Technology or Lamm Industries. Unlike so many other tube amplifier manufacturers, you won’t find KT88, 6550, or 300B output…
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When shopping for tubes, there are a number of issues to consider such as price, longevity, testing, and tone. Some amps such as the Vox AC-30 can be tough on power tubes, and when power…
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Vacuum tubes, amplifier tubes, or thermionic valves, are the heart of guitar amplification. Even solid state amps are usually designed to emulate the sound of tube amps. But the vacuum tube was actually critical for…
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History fans will enjoy this nostalgic film advertisement from the the tube (valve) manufacturer Mullard in England. They use English actor Jon Pertwee (Dr Who and The Navy Lark) in this piece about the impact…
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X-rays of vacuum tubes? Nick Veasey is a photographer that likes to do things a little differently. Rather than using a camera, he X-rays everything. Mentioned in an article published by Wired, Veasey has taken…
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We just got our first batch of the new Tungsol 7581A tubes. Unlike their standard 7581 vacuum tubes, the “A” version is rated for more power. It takes the typically 6L6GC/7581 30W rating and raises…
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