In this issue

8 Acoustic Design of Music Reahearsal Rooms
By Richard Honeycutt
14 Power for All Audio Needs
By J. Martins
For this market update on audio amplifiers, we illustrate the state of the industry in terms of audio amplification, focusing mainly on solid state and several cutting-edge approaches, including OEM modules, amp plate solutions, and the evolution of Class-D topologies
24 Why Smart Power Audio Amplifiers Are Becoming Important to Smartphones
By Eric Eklund
28 Powersoft OEM Power Amplifier Modules
Flexible Power for Active Systems
By Ward Maas
36 Dayton Audio HTA20BT Hybrid Stereo Tube Amplifier Hybrid Power for All
By David Logvin
Learn more about this hybrid stereo tube amplifier that combines a media player, vacuum tubes, and Class-D amplification in one device, complete with built-in Bluetooth wireless streaming.
42 Sonarworks True-Fi Software
The Simple EQ to Fix Your Headphones
By Luke McCready
True-Fi by Sonarworks aims to improve headphone listening on the desktop and smartphone at a price consumers can afford.
50 AoIP Delivers on Flexibility, Is Controllability Next?
By Matt Hardy
This article considers approaches to matching the flexibility of AoIP network structure with new technologies and standards for control and monitoring user interfaces.
56 Buzz Abatement in
Audio Amplifiers
By Chris Lewis and Dimitri Danyuk
This article provides several details about inductive coupling effects in audio amplifiers and the simple way to minimize them.
60 Sigma 100 (Part 2)
Driving the Satellite/Subwoofer
Loudspeaker System
By George Ntanavaras
In this second part, George Ntanavaras describes two cases for the active crossover that he used to drive the satellites and the subwoofer—one using a mini-DSP 4x10 HD versatile Digital Signal Processor (DSP) and a second one using a pure analog active crossover based on op-amps.

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.