All items tagged with vacuum tubes (57)

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!

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.

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.

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!

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.

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.

McIntosh Introduces Updated MC3500 Mk II Inspired by the Iconic Amplifier Used at Woodstock

November 4, 2021 by audioXpress Staff

McIntosh Introduces Updated MC3500 Mk II Inspired by the Iconic Amplifier Used at Woodstock

McIntosh, the prestigious home entertainment and ultimate-quality audio brand for over 70 years, announced the MC3500 Vacuum Tube Amplifier Mk II, a tribute to the original that inspired a generation of musicians and music fans alike. Originally used to power the sound system for Woodstock '69 amongst other formative music events, the iconic monoblock amp was recreated by McIntosh’s expert team of engineers and designers to include modern upgrades that celebrate the brand’s rich history.

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.

Audio Research Signals New Era with All-New Product Series

September 13, 2021 by audioXpress Staff

Audio Research Signals New Era with All-New Product Series

The I/50 Integrated Amplifier is the first product in an all-new series from Audio Research since the company was sold to Trent Suggs by the McIntosh Group. The new product series sends a clear message with a functionally simple and visually engaging design, while staying true to the company's values of sounding musically sublime. This is a product that responds to market demands, and builds upon the company's values, as the company's president and new owner promised.

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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