audioXpress - March 2021

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Volume 52
Issue 3
March 2021

FROM THE EDITOR’S DESK—Audio Sensing in 2021, by J. Martins, p. 4
MARKET UPDATE—Distributed Testing: Changing Processes for Remote Collaboration, by J. Martins, p. 8
QuantAsylum: A Real-World View of Test and Measurement, by David Logvin,
p. 24
The Lab Bench of 2021: Virtins Multi Instrument Measurement Software:
The Research, by Stuart Yaniger, p. 32
AUDIO SCOPE—Very Low Distortion, Greater Than 400mA Output Composite Amplifier Headphone Driver, by Michael Steffes, p. 40
The Science and Physics of High-End Mic-Preamp Design (Part 2): Principal Mechanisms for Audio Designers: Minimizing Noise and Distortion While Maximizing Headroom, by Mike Meechan, p. 46
Clever Engineering, by Ethan Winer, p. 52
X-Altra Moving Coil/Moving Magnet RIAA EQ Preamplifier (Part 2): MM Preamp, System Gain Amplifier, Filter, PSU, and Measurements, by Andrew C. Russell,
p. 56
HOLLOW-STATE ELECTRONICS—Souped-Up Practice Amps, by Richard Honeycutt, p. 62

audioXpress Magazine Description:

Step into the realm of audio, sound technology, and the latest developments in the field with audioXpress Magazine. We're delighted to introduce you to this publication, your ultimate source for all things related to audio, audio equipment, and the art of sound reproduction.

audioXpress Magazine, published by KCK Media Corp., is not just a magazine; it's your portal to the world of audio and sound technology.

As you explore the pages of audioXpress Magazine, you'll find a world of content that celebrates the magic of sound and audio technology:

* Audio Equipment: Dive into the world of audio gear, equipment reviews, and the latest advancements in the industry.
* Sound Technology: Explore the science of sound, audio engineering techniques, and the art of sound reproduction.
* DIY Audio: Learn about do-it-yourself audio projects, audio kits, and tips for crafting your own sound systems.
* Industry Insights: Stay informed about the latest trends, innovations, and news in the audio and sound technology field.
* Music and Sound: Immerse yourself in the world of music, audio production, and the stories of sound enthusiasts.


audioXpress Magazine is your essential resource for celebrating the magic of sound, understanding audio technology, and connecting with a community that values the science and art of sound. Subscribe now and become part of a community that appreciates the power of sound and music.