Audio Industry Icon: Rupert Neve, 1926-2021

Rupert Neve, an innovator and business owner whose analog audio equipment designs have become an essential component in music recording, live sound production and home hi-fi systems, died on February 12, 2021 in Wimberley, Texas. He was 94. Rupert Neve's name will forever be synonymous with quality audio equipment. At 94, Rupert remained engaged and passionate about his work, spending most days on a perpetual series of audio electronics projects and continuing to mentor numerous design and development projects.

In this second article, Brian Lowe (Belleson LLC) continues his search for the Unicorn of "Measuring Voltage Regulator Ripple Rejection," this time focusing on the test fixtures. Testing a voltage regulator with exceptionally good performance requires an even more exceptional signal source and measurement setup to measure sub-microVolt ripple across a wide frequency range. Complementing the final article, Jan Didden, offers an informative sidebar about super regulators. This article was originally published in audioXpress, June 2019.

In this article Brian Lowe shares a fascinating journey in his search for a "Unicorn" that is measuring voltage regulator ripple rejection - or power supply rejection ratio (PSRR). Lowe is the founder and principle engineer at Belleson, LLC, and he has devoted a lot of time to this fascinating "quest." This article was originally published in audioXpress, May 2019.

audioXpress May 2020 Glass Audio/Tube Focus edition is now available. Highlighted on the cover is a review of the RødeTest FuzzMeasure Audio and Acoustic Measurement Software and Ethan Winer's experiments to measure capacitor distortion. For tube enthusiasts, Bill Reeve repurposes an old Shure preamp for line-level duty, and Bruce Heran details how he built his two Mini Blocks tube amplifiers. Mike Rothacher shares an inexpensive MOSFET Follower (MoFo) Class A amplifier project, Richard Honeycutt provides valuable lessons about repairing guitar amplifiers, and there's plenty more audio electronics focused articles. Download now!

In November 2013, audioXpress received a facelift. We expanded the content, added several new columns and feature articles, increased our focus on audio research and development (R&D), product design, professional audio equipment, and acoustic science while maintaining our roots in DIY audio and audio electronics.

With a little know-how and some basic parts, you can design a hybrid amplifier in fairly short order. This project combines the best attributes of both tube and transistor technologies.