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 the February 2024 issue of audioXpress read the latest on AI, Adaptive Audio Enhancement, and Noise Cancellation, Microphones, and Voice Capture. René Christensen writes about Acoustical Shape Optimization, and Richard Honeycutt writes about Sustainable Acoustical Products. David Ralph writes about Duelund vs. Linkwitz-Riley crossovers, and Paul Kittinger explains how to build the Duetta Transmission-Line speakers. Chris Paul writes about A Better Beta Follower amplifier, while Richard Honeycutt puts together an Imaginary Silvertec Guitar Amplifier.

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.

audioXpress December 2019 dives into the latest wireless audio and DSP platforms and solutions in a dedicated Market Update, followed by a review of the latest Audio Precision APx555 B Series audio analyzer. David Logvin shares his experience with the xCORE VocalFusion development platform by XMOS, while Michael Steffes re-confirms a theory that cascaded amplifier + ADC harmonic distortion combine as voltage swings. Christopher Paul explores alternative approaches to the design of a linear current regulator for audio tube amplifiers, Menno van der Veen details an 18 W single-ended valve amplifier using Trans technology, and Richard Honeycutt investigates whether or not swapping out comparable tubes makes any audible difference in a guitar amplifier’s sound. Download your own copy now!

The November 2019 edition of audioXpress is now available with a wide range of technical topics in audio electronics and design. We review the Benchmark LA4 Line Amplifier and the new Hooke Verse Bluetooth Binaural Recording Headphones. Jan Didden proposes an updated version of his High-Voltage Delay for Tube Amplifiers, and Thomas Zarbo, Jr. explains how to build his Tenacious Bass-8 Powered Subwoofer. And, learn more about Data-Over-Sound, MU amplification topologies, and Auverdion’s Aurora open-source DSP platform. Now available!

Recently, the very existence of current feedback as opposed to voltage feedback has been called into question. This article analyzes and tests simple versions of voltage and current feedback amplifiers and demonstrates some differences in their characteristics. The article provides an excellent overview of historical terminology and how the more modern terms came about and their dependence on context. These articles were originally published in audioXpress, July and August 2018.

audioXpress October 2017 brings another strong combination of inside perspective, educational value, and practical projects. In this edition, Christopher Paul explains his Denali Voltage Reference low impedance amplifier design, Stuart Yaniger does a full objective review of the surprising Markaudio-Sota Viotti speakers, we explain how Harman is using COMSOL Multiphysics simulation software on car audio, Richard Honeycutt explains the story of the Circlotron amplifiers and so much more...

Linear Audio Vol 12 is the 13th issue of a series of printed bookzines dedicated to technical audio and perception. Published every time Jan Didden things he has good enough content, Linear Audio is a vehicle for publishing technical information, developments and the state of the art of audio from a technical perspective. And this latest edition includes great articles by Chris Paul, Pierre Touzelet, Bill Waslo, Vincent Thiernesse, Hans Polak, Douglas Self and more…

audioXpress October 2016 is now available online and features two exciting reviews—one on the Bricasti Design M1 Dual Mono DAC - Deluxe Limited Edition and the other on the XiVero MusicScope file analysis software. We also report on this year’s 2016 Midwest Audiofest Speaker Design competition; Christopher Paul shares his Regulated Filament Supply project; and we talk about microphones with Matthew McGlynn, owner of Microphone-Parts. This and much more to read. Download your edition now.

“I Can Hear It. Why Can’t I Measure It?” is the title of an excellent article written by Dan Foley and featured in this month’s issue. It could also be the slogan for our audioXpress March 2016 issue, which focuses on Test and Measurement. We tried to combine reviews, and practical and theoretical perspectives for this issue. Download it now!