All items tagged with tubes (126)
Tube Amp Doctor Introduces New TAD 6V6GT-STR REDBASE Premium Selected Tubes
August 4, 2022 by audioXpress Staff

Tube Amp Doctor Introduces New TAD 6V6GT-STR REDBASE Premium Selected Tubes

With the entirely new TAD 6V6GT-STR REDBASE, German company Tube Amp Doctor Musikhandels GmbH introduced a new family member to their REDBASE high quality premium tube series. An ideal tube for Fender Deluxe Tweed 5E3 or Blackface Princeton Reverb guitar amps, single ended Class A amps like the Fender Tweed Champ, Vibro Champ, Fender Champion 600 or the Univalve. As the company explains, many boutique amp builders have already embraced the TAD 6V6GT-STR REDBASE and the company is ready to ship worldwide!
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It's Tube Time! audioXpress May 2022 Glass Audio Special!
April 11, 2022 by audioXpress Staff

It's Tube Time! audioXpress May 2022 Glass Audio Special!

It's time for the Glass Audio/Tube Focus edition of audioXpress. In this issue, Michael Boele shares his long-term review of a pair of 2021 new production Western Electric 300Bs, Merlin Blencowe explains how to add Bluetooth to a Tube Amp, and Alan Kimmel introduces us to the possibilities of the Pentriode. There's also a Market Update report on vinyl sales and the latest trends in turntables and cartridges, as well as a review by Stuart Yaniger of the latest Orchard Audio Starkrimson Stereo Ultra GaN-based amplifier.
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Why Power Tubes Arc
April 7, 2022 by Edwin G. Pettis

Why Power Tubes Arc

Tube arcing is not necessarily a result of a "bad" tube or a "bad" design. It is far more likely the result of using the tube longer than you should for the application you’re using it. This interesting article, published in audioXpress, November 2004, remains a great read. At the time it also originated a response from Eric Barbour and Ed. T. Dell regarding their experience with cathode stripping.
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Meeting Supply for Vacuum Tubes - Time to Save Those Tubes?
March 18, 2022 by Joao Martins

Meeting Supply for Vacuum Tubes - Time to Save Those Tubes?

The situation in Ukraine and the sanctions imposed on Russia are having a significant impact on the global supply of tubes to the audio industry. Both Ukraine and Russia are important suppliers of raw materials, and the sanctions are likely to cause further strain over the supply of source materials that all manufacturers of tubes need. In China there are also significant disruptions caused by pandemic lockdowns, transportation challenges, and cost increases. How many tube manufacturing operations remain viable? Western Electric says there is hope... in the US!
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Update Regarding the Supply of Amplifier Tubes from Tube Amp Doctor
March 16, 2022 by Joao Martins

Update Regarding the Supply of Amplifier Tubes from Tube Amp Doctor

It's a known fact that both Ukraine and Russia are important suppliers of raw materials, particularly steel and aluminum, but also many critical parts and components for the electronic industry. The invasion of Ukraine and the resulting sanctions imposed over Russia are obviously having a significant impact over the global supply of tubes. Tube Amp Doctor Musikhandels GmbH, based in Germany, just released a situation update regarding the supply of amplifier tubes.
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Western Electric 91E Integrated Stereo Amplifier Available for Pre-Order
January 10, 2022 by audioXpress Staff

Western Electric 91E Integrated Stereo Amplifier Available for Pre-Order

audioXpress readers have long been anticipating the announcement, and Western Electric finally confirmed that the company is taking orders for the new 91E integrated amplifier. Following the resumed production of the 300B triode tubes at the modern Rossville Works facility, Western Electric now launches a single-ended (SE) high-fidelity amplifier inspired by the 91A, its famous predecessor used in early Hollywood motion pictures. The new SE design offers over 20 watts per channel - a first for the 300B in a totally new design for the 21st Century.
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Tube Amp Doctor Announces New EL34-STR REDBASE Premium Selected Tubes
October 11, 2021 by audioXpress Staff

Tube Amp Doctor Announces New EL34-STR REDBASE Premium Selected Tubes

Following on the introduction earlier in 2021 of the 6L6GCM-STR, the first model from an all-new high quality premium tube series named REDBASE from Tube Amp Doctor (TAD), the German company now announced the new TAD EL34-STR REDBASE, which can be used for any EL-34 application in guitar amplifiers and also hifi tube designs instead of 6CA7 and KT77 tubes. All tubes in TAD’s REDBASE family are manufactured on a new exclusive production facility.
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Reducing Filamentary Triode Amp Distortion
September 1, 2021 by Larry Lisle

Reducing Filamentary Triode Amp Distortion

In this article, the author defends that it’s possible to dramatically reduce the intermodulation distortion in class A filamentary triode tubes by reducing the filament voltage. The theory being that the most important reason for the drop in distortion with the lowering of filament voltage is the reduction of the space charge. This article was originally published in audioXpress, May 2005.
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D.W. Fearn Hazelrigg Industries Venture Opens Toronto Offices
July 27, 2021 by audioXpress Staff

D.W. Fearn Hazelrigg Industries Venture Opens Toronto Offices

Since 2017, D.W. Fearn, the manufacturer of professional vacuum tube audio recording equipment, handed over the production and marketing of its iconic line of gear with the distinctive red front panels to Hazelrigg Industries under an exclusive licensing agreement. Now, D.W. Fearn | Hazelrigg Industries, have announced the opening of their first Canadian offices, headed up by tech industry veteran Scott Taylor.
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R&D Stories: The Original Western Electric 300B Vacuum Tube Now Shipping Worldwide
June 8, 2021 by Richard Honeycutt

R&D Stories: The Original Western Electric 300B Vacuum Tube Now Shipping Worldwide

Celebrating the reintroduction of the famous Western Electric 300B triode, now out of Rossville, GA, in this article, Richard Honeycutt asked key questions to entrepreneur Charles Whitener, the main force behind the revived Western Electric venture, which is also investing in new tube audio amplifiers and tube related electronics. Since a visit to the facilities wasn't yet possible but production had resumed, audioXpress provided an inside look at Western Electric and its reestablished operations. This article was originally published in audioXpress, May 2021.
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