Recently, OpenAudio formally signed a strategic cooperation agreement with Soundcertificate, the world-renowned tech manufacturing and official Google Cast certified testing giant based in Austria. Following a series of rigorous, global-standard testing procedures, OpenAudio’s HOLOWHAS Ultra-GC has successfully obtained the official Google Cast certification issued by Soundcertificate. This milestone not only marks OpenAudio’s core product meeting the highest technical specifications of the global Google ecosystem but also solidifies the brand’s technological strength in intelligent audio and cross-ecosystem compatibility, laying a robust authoritative foundation for its global market expansion and deep integration into the international smart audio landscape.
HOLOWHAS Ultra-GC: https://www.openaudio.io/holowhas-ultra-gc/
About Soundcertificate: The Authorized Core Tester for Google Cast Certification
SoundCertificate is a third-party audio testing and certification organization headquartered in Vienna, Austria. The company focuses on providing official testing and certification services for smart speakers, amplifiers, multi-room audio systems, and voice-enabled devices. Its certifications are widely used across the Google Cast, voice assistant, and streaming ecosystems, helping products successfully enter international markets.
Equipped with state-of-the-art testing laboratories that adhere to Google’s unified global technical specifications, world-class testing equipment and a team of senior audio-visual technology engineers, Soundcertificate’s Google Cast certification system sets stringent benchmarks covering protocol compatibility, lossless audio transmission, audio-visual synchronization, low-latency performance and multi-device collaborative stability. Its certification results are recognized and endorsed globally, serving as the “technical pass” for electronic devices to access the Google ecosystem. For audio products, Soundcertificate’s professional testing capabilities focus on verifying the seamless integration of audio hardware with the Google Cast protocol, ensuring that high-quality audio signals are transmitted stably and without distortion across the entire Google ecological device matrix— a core advantage that makes Soundcertificate the preferred certification partner for leading audio brands pursuing global market access.
Rigorous Google Cast Testing: HOLOWHAS Ultra–GC Meets Global Top-Tier Standards
As one of the world’s most widely adopted cross-platform wireless audio and video transmission protocols, Google Cast enables seamless screen mirroring and audio streaming between Android, iOS, Windows, macOS devices and compatible smart hardware via the Chrome browser or Google Cast-enabled apps. For high-performance audio devices like the HOLOWHAS Ultra-GC, Google Cast certification demands an uncompromising combination of flawless protocol adaptation and superior audio performance— a dual standard that places extreme requirements on the product’s signal processing, anti-interference capabilities and software-hardware synergy.
Under Soundcertificate’s professional and systematic testing framework, the OpenAudio HOLOWHAS Ultra-GC underwent a full range of stringent assessments aligned with Google’s global certification norms, with key testing dimensions including:
- Google Cast Protocol Deep Compatibility: Verified the product’s fast pairing (≤2 seconds response), 24/7 stable connection and smooth switching performance with mainstream Google ecosystem devices such as Google Nest smart speakers, Android smartphones/tablets, and Windows/macOS computers, ensuring seamless interconnection across different systems and brands.
- Lossless Audio Transmission Performance: Tested the retention rate and sound quality restoration of high-resolution audio signals during wireless transmission via Google Cast, confirming that the HOLOWHASUltra-GC preserves the full detail of lossless audio formats without compression or distortion, delivering the brand’s signature high-fidelity listening experience.
- Low-Latency Audio-Visual Synchronization: Adhered to Google’s strict latency standard (≤25ms) for Google Cast devices, ensuring perfect audio-visual sync in movie playback, gaming and other scenarios, and eliminating stuttering or lag that would compromise the user experience.
- Multi-Scenario Anti-Interference Testing: Simulated complex electromagnetic interference environments in home and commercial settings, validating the product’s signal stability and audio purity during Google Cast wireless transmission, even in the presence of overlapping WiFi and Bluetooth signals.
With its excellent hardware design, optimized signal processing algorithms and in-depth software adaptation for the Google Cast protocol, the OpenAudio HOLOWHAS Ultra-GC passed all testing items with excellent results, successfully obtaining the official Google Cast certification certificate from Soundcertificate. This certification officially confirms that the product fully complies with Google’s global technical specifications and has the qualification to access the global Google ecosystem, marking a key step for OpenAudio in its internationalization strategy.
Strategic Significance: Authoritative Endorsement for Global Market Expansion
The successful signing of the strategic cooperation agreement with Soundcertificate and the acquisition of Google Cast certification for the HOLOWHAS Ultra-GC represent a pivotal strategic achievement for OpenAudio, with far-reaching value for the brand’s development:
- Global Authoritative Technical Endorsement: As an official Google-authorized testing institution, Soundcertificate’s certification provides the HOLOWHASUltra-GC with a globally recognized technical credential, effectively proving OpenAudio’s R&D and manufacturing capabilities in intelligent audio devices, and enhancing the brand’s credibility and competitiveness in the international high-end audio market.
- Seamless Access to the Global Google Ecosystem: Google Cast is pre-installed on billions of smart devices worldwide, and is the core ecological entry point for the European and American high-end home audio-visual markets, supporting wireless streaming from mainstream overseas music and video platforms such as Spotify and YouTube. The certification enables the HOLOWHASUltra-GC to seamlessly integrate with the Google ecosystem, perfectly matching the usage habits of global consumers and opening the door for Oppo Audio’s in-depth layout in key international markets.
- Long-Term Technical Cooperation for Sustained Innovation: According to the strategic cooperation agreement, Soundcertificatewill provide OpenAudio with real-time technical support for Google Cast protocol updates and global standard revisions, helping the brand keep pace with the latest development trends of the global smart audio industry. The two parties will also establish a pre-testing mechanism for new product R&D, enabling OpenAudio to optimize product performance and ecological adaptability from the research and development stage, and continuously drive the innovation and upgrading of intelligent audio technology.
Conclusion
The strategic partnership with Soundcertificate and the successful Google Cast certification of the HOLOWHAS Ultra-GC are a testament to OpenAudio’s unwavering commitment to “technology-driven and quality-oriented” development. Looking ahead, OpenAudio will take this certification as a new starting point, leverage the advantages of Google Cast ecosystem compatibility to further polish the performance of its intelligent audio products, and bring more seamless, high-quality audio experiences to consumers around the world. At the same time, OpenAudio will deepen in-depth cooperation with Soundcertificate and other global top-tier technical institutions, continue to explore the integration of high-fidelity audio technology with smart ecosystems, and strive to build itself into a leading brand in the global intelligent audio industry with cutting-edge technology and authoritative quality certification.
For more details, please visit: www.openaudio.io
Viper
27 Jan, 2026Big congrats on the official certification! That "Ultra" badge really makes a difference when you're looking for stability in a high-end streaming setup.