audioXpress Magazine September 2026

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audioXpress Magazine September 2026

audioXpress remains the authority on audio and reproduced sound by connecting manufacturers and distributors with developers, buyers and consultants around the globe! It's readers are the audio product designers, consultants, integrators, DIY enthusiasts, opinion leaders and your best customers. All of them agree that the coverage of trending topics, unique in the audio industry, make audioXpress a must read.

Every month, audioXpress combines the best educational articles on topic such audio electronics, speaker and headphone design, amplifiers (from tube to Class D), acoustics, practical test and measurement, audio engineering praxis, and standards. audioXpress provides inside stories on new audio developments, on R&D Stories, the most complete objective reviews of innovative products and software, and selects some of the best DIY audio projects from worldwide experts.

Why The Broad View Matters
It reveals what the market still seeks, values, and desires.
Editorial By J. Martins
audioXpress covers a deliberately broad scope of topics in the audio world, from technology and applications to the developer and product-design side of the industry. That breadth is the reason the publication has become useful as a reference across many adjacent markets. Audio is often reported in narrow verticals, but real product development rarely fits neatly inside those boundaries. A technology may fail in one market and succeed in another simply because the use case, business model, or customer expectations are different. That is why audioXpress writes for developers, manufacturers, designers, and the wider supply chain rather than for a single segment alone. The publication's DIY roots still matter, too. The same curiosity that drives people to build, test, and sometimes break things is what keeps the editorial voice connected to innovation and experimentation. A wide editorial scope also makes it possible to track emerging ideas before they become mainstream categories. audioXpress covered voice recognition before smart speakers, wireless audio before it was widely associated with anything beyond telephony, and adaptive signal processing before hearables became a major topic.
---> Why The Broad View Matters.

5 Supporting Companies

Fresh From The Bench
8 miniDSP Tide16 Multichannel Audio Processor
A Not So Mini Immersive Audio Platform
By Philipp Paul Klose
Powered by a quad-core ARM processor, the Tide16 is
a multichannel audio processor with 16 outputs, DTS:X
and Dolby Atmos decoding, including DIRAC Research's
latest room correction software, active room treatment
(ART), and much more.

16 CRYSOUND Microphone Calibrator
And New Measurement Microphones
By Stuart Yaniger
This article is a hands-on review of the all-new
CRYSOUND CRY3018, an intelligent microphone
calibration platform that senses the environment in
real time and compensates automatically. For the
review, audioXpress also received the CRY3213 NVH 1/2"
measurement microphone for demanding test situations,
and the CRY3203-S01 high-precision 1/2" measurement
microphone for everyday applications.

Practical Test & Measurement
24 LEAP Into The Future With Listening Effort Prediction
By Marc Marroquin and Brandon Schafer
This article introduces LEAP, which stands for Listening
Effort prediction from Acoustic Parameters, a modern
metric developed by Fraunhofer IDMT-HSA. It also
presents an applied evaluation of how LEAP behaves
across common communication scenarios.

Signal Processing
36 Achieving Sub-Millisecond Latency In AI-Enhanced Hearing Devices
By Alexander Goldin
This article discusses how Alango Technologies' Zero
Latency Signal Processing (ZLSP) addresses the need for
ultra-low latency in hearing devices, with large potential
in DNN-based applications such as speech enhancement
and noise reduction.

Spatial Audio
44 Audioscenic Amphi
Enabling Spatial Audio On Windows Laptops
By Daniel Wallace
Speaker-based spatial audio hasn't taken off convincingly
in consumer devices, largely due to barriers in content platform
support and hardware deployment. A new
approach makes spatial audio practical on Windows PCs
by using laptop speakers, automatic detection, listener
sensing, and hardware-friendly integration—leveraging
the existing Audio Processing Object (APO) framework.

Simulation Techniques
48 Simulation Apps
By René Christensen
Expert tools become powerful when they're shared. Simulation
apps can turn complex engineering work into reusable
workflows, helping teams move faster, collaborate better, and
focus on results instead of repetitive setup. The message is
simple: build once, empower many, and let smart automation
multiply your impact.

You Can DIY
54 Resurrecting The G40EP Headphone Amplifier
By Brian Bylenok
In 2006, Dr. Andrew Smith (call sign G4OEP) wrote an
article for British magazine SPRAT titled "High Performance
Headphone Amplifier." Inspired by that project, which used a
well-known car audio integrated circuit, the STMicro TDA2003,
Aren van Waarde wrote "The G4OEP: A Flea-Powered
Headphone Amp" project for audioXpress (March 2008), which
was later revisited by Luciano Peccerini in his audioXpress
article "Beyond G4OEP: Improving a Flea-Powered Headphone
Amp" (June 2009). It seems this simple circuit continues to
inspire and fascinate as this new project shows.

R&D Stories
58 Designing The Dynaco ST-70 Series 3
Bias Setup
By Dan Fraser
Having created a new version of the Dynaco ST-70
Series 3 amplifier, Dan Fraser's reward is writing this series
of technical articles. This article describes the reasoning for
adding individual bias controls for each tube. Also described is
an inexpensive way, using easy-to-obtain parts, to add visual
means to set the bias that may be added to most any tube
amplifier.

Hollow-State Electronics
63 How Loud Is That Guitar Amp?
By Richard Honeycutt
The technical history of guitar amplification power growth
evolved from early amps and a few clean watts for lap steels
and small ensembles into the high-power tube systems used
for louder bands, bass, and eventually rock music. A great
reminder of how engineering, musical demands, and sheer
ambition keep reshaping audio history.