audioXpress Magazine November 2025

Home \| High-End Audio Reviews \| Audiophile Show Reports \| Partner Mags \| Hi-Fi / Music News
	High-Performance Audio Reviews Music News, Show Reports, And More! Celebrating 30 Years Of Service To Music Lovers

audioXpress Magazine November 2025

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.

Algorithms, Systems, And Ubiquitous DSP
AI makes audio signal processing more pervasive.
Editorial By J. Martins
Signal Processing—mostly in the digital domain (DSP), but also not forgetting any form of analog signal processing at some stage—is currently an essential discipline in audio. It's always curious to see discussions among hifi enthusiasts about what they recognize as being "acceptable" to do or not do with DSP—when in fact it is virtually everywhere in today's audio technology. And why would "analog" signal processing be any "better" than "digital signal processing" these days? More intriguing is debating the merits of fully integrated speaker design with optimized amplification and signal processing, which these days is a standard in professional studio monitors ...independently of whether the electronics reside inside the cabinet or not. Why would a speaker design for home listening be any different? As demonstrated countless times, signal processing can be many different things, from helping achieve ideal active crossovers, compensate for the room acoustics, or adjust frequency response targets with different goals (a more enjoyable listening experience being an acceptable objective that is completely different from achieving a linear neutral response for reference monitoring). The fast evolution of signal processing is what powers today's modern technology. Innovations demonstrated in products we use every day, making possible that we are understood during a call made in the worst possible acoustic conditions....
---> Algorithms, Systems, And Ubiquitous DSP.

5 Supporting Companies

Features
20 headPro Audio Processor
Headphone Correction with DIY Stand-Alone
DSP Hardware
By Philipp Paul Klose
This project explores the missing link for high-quality
headphone playback—designing a custom DSP signalflow
for audio processing of wired in-ear, over-ear,
and on-ear headphones. A journey exploring the
sound personalization options using DSP few have
dared to take.

36 Orchard Audio Valencia Balanced
Headphone Amplifier
By Oliver A. Masciarotte and Stuart Yaniger
As the headphone market doesn't show any signs of a
slowdown and enthusiasts continue to invest in ever
more high-end products, Orchard Audio launched
the Valencia, a Class AB, balanced headphone power
amplifier. Oliver Masciarotte reviews the product and
Stuart Yaniger provides the measurements.

42 The imersiv D-1 Dual Path
HDR-A DAC
Product and Technology
By Stuart Yaniger
The new imersiv D-1 digital-to-analog converter
(DAC) is the first product from a new brand created
by Millennia founder John La Grou, introducing the
new High Dynamic Range Audio (HDR-A) architecture.
The D-1 DAC, achieving nearly 29-bit performance,
or >170dB dynamic range, was beta-tested at places
such as Skywalker, Sony, Disney, Sterling Mastering,
and many others who praised the results. This article
is the objective review of the D-1 DAC.

50 Solving the Spatial Audio Puzzle
From Voice Calls to Virtual Prescence
By Dani Cherkassky
The Immersive Voice and Audio Services (IVAS) codec
enables the capture, transmission, and reconstruction
of rich 3D spatial information across everything from
mobile calls to virtual meetings. This article details
how Kardome's SpotFormer technology bridges
the gap between raw microphone capture and
IVAS' metadata-driven framework, making natural,
spatially-aware digital interactions possible.

DSP, AI, and Edge Processing
Market Update
8 Unlimited Possibilities for Audio Processing
By J. Martins
Audio processing powered by Artificial Intelligence and
Machine Learning is opening previously unimaginable
possibilities from consumer electronics to automotive.
This article places all those trends in perspective.

27 Music Style Transfer Explained
By Estefanía Cano
Inspiration can come from anywhere: sounds, textures,
timbres, harmonies that we listen to in our daily lives—the
rich voice of a singer, the timbre of a brass quartet playing
in a concert hall, the complex textures of a remote
soundscape. What if we could transfer the qualities of
sound that inspire us to our own music? This is precisely
what style transfer technologies aim to achieve.

54 Danville Signal's dspNexus 2/8
Part 1—Working on Musical Improvements with DSP
By Thomas Perazella
After working with DSP for many years, Thomas Perazella
has found that audio systems will not reach their full
potential without the inclusion of a proper DSP in the signal chain.
In this article, he will try to explain what has led him to this conclusion.

Columns
Hollow-State Electronics
63 How About a Hollow-State Live-Sound System?
By Richard Honeycutt
In this article, our hollow-state expert makes the case
for using hollow-state amplifiers for live sound events
today using historical examples of past speeches and concerts.

Subscribe To audioXpress Magazine
Click here to subscribe to audioXpress magazine.