Chicago Electrical Contractor R. Drewno Electric Selects OpenAudio HOLOWHAS Plus for Luxury Residential Audio Project
Chicago, USA – OpenAudio is pleased to announce that R. Drewno Electric, an established electrical contractor serving the greater Chicago area, has selected the OpenAudio HOLOWHAS Plus centralized multi-room audio platform for a luxury residential installation.
With more than two decades of experience, R. Drewno Electric has built a strong reputation for delivering high-quality electrical contracting services across residential and commercial projects throughout the Chicago metropolitan area. Publicly available construction records show the company has consistently participated in premium residential developments, including custom luxury homes, large-scale residential renovations, electrical infrastructure upgrades, and commercial construction projects.
Recent projects undertaken by the company include multi-million-dollar custom home construction, extensive residential remodeling, and complex electrical installations for high-end single-family residences. This long-standing project portfolio reflects the company’s commitment to quality craftsmanship and reliable project execution within Chicago’s luxury residential market.
As demand continues to grow for integrated smart home technologies, homeowners increasingly expect centralized control of lighting, climate, security and entertainment systems. Multi-room audio is becoming an essential part of modern residential infrastructure rather than a standalone entertainment product.
For one of its luxury residential projects, R. Drewno Electric selected OpenAudio HOLOWHAS Plus to provide centralized whole-home audio distribution. During system commissioning, OpenAudio’s engineering team worked closely with the customer to provide remote technical support and integration assistance, ensuring successful deployment and stable operation.

HOLOWHAS Plus is OpenAudio’s flagship centralized multi-room audio platform, designed specifically for luxury residences, villas, hospitality environments and smart buildings. By integrating streaming audio, matrix routing, DSP processing and multi-zone amplification into a single platform, the system significantly simplifies installation while delivering a premium user experience.
In addition to its audio capabilities, HOLOWHAS Plus provides native integration with leading smart home and building automation ecosystems, including:
- KNX
- Control4
- RTI
- Matter
- Home Assistant
OpenAudio continues to expand its automation ecosystem. The latest KNX integration now supports real-time playback metadata, allowing KNX touch panels and visualization systems to display:
- Song Title
- Artist
- Album
- Cover Art
- Playback Progress
- Playback Status
This enhanced metadata functionality has already been successfully integrated with leading KNX ecosystems, enabling a richer and more intuitive smart home user experience.
“Modern luxury homes require much more than traditional background music systems,” said Darren Ma, Ph.D., at OpenAudio. “Our vision is to make audio a native subsystem of the smart home, seamlessly integrated with lighting, climate control, security and automation platforms. We are pleased to support experienced electrical contractors such as R. Drewno Electric as they continue delivering increasingly sophisticated residential projects.”
OpenAudio remains committed to providing open integration, long-term technical support and scalable multi-room audio solutions for electrical contractors, system integrators, smart home professionals and luxury residential developers worldwide.
For more information about OpenAudio and the HOLOWHAS product family, please visit: www.openaudio.io
About R. Drewno Electric
Drewno Electric is a Chicago-area electrical contractor with more than twenty years of experience serving residential and commercial construction projects. The company has participated in numerous custom home, luxury residential renovation and commercial electrical projects throughout the greater Chicago region, providing professional electrical contracting services for a wide range of building applications.
About OpenAudio
OpenAudio develops next-generation centralized multi-room audio platforms for luxury residential, hospitality and commercial applications. The company’s solutions combine native streaming audio, DSP, matrix routing, automation integration and open APIs into a unified architecture supporting KNX, Control4, RTI, Matter, Home Assistant and other leading smart building ecosystems.





