All items tagged with tube amplifiers (81)

audioXpress May 2024 Glass Audio Special Issue Now Available

April 12, 2024 by audioXpress Staff

audioXpress May 2024 Glass Audio Special Issue Now Available

In the 2024 Glass Audio Special issue there’s Menno van der Veen’s TubeSociety TS-2022-OTL hybrid amplifier, and a Low-Feedback Triode Amplifier With Zero Output Impedance (ZOI) as DIY projects, designed by Tim Mellow and Peter Farrow. More great audio electronic articles by Rudolf Moers, Christopher Paul, and Dimitri Danyuk. Read about sustainable acoustical absorption, the Pure Acourate Sound Project, and The Neurochrome Story. And Andrew C. Russell concludes his High-Performance 60-Watt Class A Amplifier project.

In-Ear Technology Meets Music Fidelity in audioXpress April 2024!

March 12, 2024 by audioXpress Staff

In-Ear Technology Meets Music Fidelity in audioXpress April 2024!

Read the latest Earbuds and Hearables market update. sensiBel experts explain everything about the advantages of Microphone Array Beamforming with Optical MEMS Microphones. GRAS' researchers share their findings about Ear Canal Geometry for In-Ear Headphone Testing. Learn how Hearing and Audio affects our perception of music fidelity. Jan Didden interviews Menno van der Veen. Andrew Russell shares his High-Performance 60-Watt Class A Amplifier project, and Tom Perazella explains how to build a Comprehensive AC Power Controller.

Audio-Technica Introduces Narukami Ultra-High-End Tube Headphone Amplifier and Headphones

March 7, 2024 by audioXpress Staff

Audio-Technica Introduces Narukami Ultra-High-End Tube Headphone Amplifier and Headphones

Audio-Technica is introducing its Narukami ultra-high-end audio products, which are meant to take the pursuit of analog and tube sound reproduction to a new level of excellence. Making their US premiere at CanJam NYC 2024 (March 9 – 10 at the Marriott Marquis, New York), the Narukami HPA-KG NARU Tube Headphone Amplifier and ATH-AWKG Closed-Back Dynamic Wooden Headphones are ultimate-quality works of audio art. With a price that could buy a house not a long time ago, this is in the above-luxury category.

Orange Amplification Introduces New Orange Valve Tester MKII

February 22, 2024 by Joao Martins

Orange Amplification Introduces New Orange Valve Tester MKII

British guitar amplification brand has unveiled the Orange Valve Tester MKII which supersedes the Orange VT1000, introduces originally as the world's first automatic digital valve tester pioneered, developed and patented by Orange. The new Orange Valve Tester MKII enables a wide range of tests with speed, simplicity and accuracy, setting a new standard in valve/tube-testing technology for roadies, musicians, hi-fi enthusiasts and service professionals alike.

Audio Electronics: Myths in Tube Circuit Designs

December 20, 2023 by Peter Dieleman

Audio Electronics: Myths in Tube Circuit Designs

Many audioXpress readers will be familiar with Peter Dieleman from his books on the theory and practice of tube amplifiers. In this article he debunks some of the myths, such as load (mis) match in output stages, which is by definition perceived as a bad thing, when that might not be necessarily the case. Another myth example regards the efficiency of a triode output stage versus a pentode.

Book Review: Learning Audio Testing and Measurements

July 12, 2023 by Jan Didden

Book Review: Learning Audio Testing and Measurements

For those who need to refresh their knowledge or learn about audio test and measurements, Jan Didden reviews a great - and big! - book on the topic. Audio Tests & Measurements by Igor S. Popovitch is one of the many self-published works by this proficient writer based in Australia, also the author of several popular books on vacuum tube amplifiers. This particular book runs about 180 pages, but that is deceiving as the book’s format (A4 size) is about twice the size of most soft cover books.

Spatial, Immersive, Inside and Out Automotive Sound in audioXpress June 2023

May 11, 2023 by audioXpress Staff

Spatial, Immersive, Inside and Out Automotive Sound in audioXpress June 2023

audioXpress June 2023 combines must-read articles on Automotive Audio, essential knowledge, cutting-edge R&D, practical build projects and much more. Learn about the latest innovations and sound design for Electric Vehicles. Read about DSP tuning in automotive audio. Learn about Audioscenic's extraordinary journey in 3D audio beamforming technology, build a new signal amplifier and processor for the ACH-01 Accelerometer, and much more.

audioXpress May 2023. Tubes, Amplifiers, and Audio Electronics!

April 11, 2023 by audioXpress Staff

audioXpress May 2023. Tubes, Amplifiers, and Audio Electronics!

In this Glass Audio special issue, Menno van der Veen brings us his latest Vanderveen TRANS-PP80 Valve Amplifier, Tom Perazella remakes a famous (Z)OTL amplifier with 300Bs, and Peter Dieleman debunks recurring myths in tube circuit designs. Stuart Yaniger reviews the Hypex NCORE NCx500 amplifier module, while Burkhard Vogel expands his article on Vintage Op-Amp Noise Simulations, and Bruce E. Gillingham concludes its unique MB1 Monoblock Power Amplifier with Precision Bias Control.

Closer to Home. audioXpress October 2022 Is Now Available

September 9, 2022 by audioXpress Staff

Closer to Home. audioXpress October 2022 Is Now Available

There's a lot of everything in audioXpress October 2022. Starting with a market update on audio for Residential Integration. Next, Jonny McClintock shares The Story of aptX, Gary Galo reviews Sumiko phono cartridges and new 78 rpm stylus, Richard Honeycutt explains RT Measurement, Frans de Wit tackles the design of a DC Power Supply, Ken Bird builds a pair of tower speakers with Oaktron drivers manufactured in the US, and Christopher Paul writes about Triode Common Cathode Stages and its controversies.

Fresh From the Bench: Western Electric's New Production 300B

August 25, 2022 by Michael Boele

Fresh From the Bench: Western Electric's New Production 300B

Renowned tube expert Michael Boele offers his long-term review of a pair of 2021 new production 300B directly heated power triodes. For 10 months, Boele had the opportunity to live with and extensively use a pair of these 300Bs and his impressions and extensive testing could be directly contrasted with his considerable collection of 300B tubes - Chinese, Russian, Czech and Slovak clones, as well as several pairs of Westrex/Western Electric reissues, and two “old stock” Western Electrics. This article was originally published in audioXpress, May 2022.

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