Germany’s AD AUDIENCE DELIGHT provided a full‑range audio system to support mainland singer Hailai Amu, Taiwanese singer Joey Yung, Hong Kong singer Adu, and other stars at the Chongqing Hechuan concert.

A wave of sound sweeps through Hechuan, bringing the authentic vibe of youth to life! Germany’s AD AUDIENCE DELIGHT provides a full‑range audio system for mainland singer Hailai Amu, Taiwanese singer Joey Yung, Hong Kong singer Adu, and other stars at their Chongqing Hechuan concert.
On June 23, 2025, the “Back to That Day (Infinite Extension Edition)” concert kicked off with electrifying energy at the Hechuan Sports Arena in Chongqing, drawing over 30,000 fans who gathered to experience a grand musical feast. For this large-scale outdoor performance, the entire professional sound reinforcement system was supplied by AUDIENCE DELIGHT, a premium German brand, exclusively represented across Greater China by Guangzhou Huaxin Audio Equipment Co., Ltd. Leveraging the brand’s nearly half-century legacy of European acoustic research and development, the complete sound system delivered stable, round-the-clock operation for multiple days, seamlessly overcoming the acoustical challenges posed by Hechuan’s vast venue. The result was a flawless audio experience—free of feedback or extraneous noise, with consistently balanced clarity whether near or far—establishing a new benchmark for large‑scale stadium tours in China.

I. 52 Years of Acoustic Expertise in Europe | An In-Depth Analysis of the German AD Brand’s Core Competencies
Germany’s AD, short for AUDIENCE DELIGHT, was co-founded in 1974 by Dutch entrepreneur Luis van Rossum and Philips’ veteran audio engineer Frans van Meulebroeck. Originally headquartered in Spain, the company blends Germany’s meticulous manufacturing standards with cutting-edge European acoustic technology. With nearly half a century of expertise in professional audio, AD has earned widespread recognition as a premier high-end sound system brand for global tours, theaters, and music festivals.

1. Global R&D and endorsement by authoritative certifications
The brand has established its own independent acoustics laboratory in Europe, holding dual AES international acoustics certifications. It consistently serves world‑class European and American theaters, premier global music festivals, and top-tier artists on their international tours, with products sold in over a hundred countries worldwide. In 2009, Guangzhou Huaxin Audio became the exclusive general distributor for AD in Greater China, responsible for official equipment imports, domestic venue acoustic optimization, nationwide project implementation, and lifelong after‑sales service and maintenance.
2. Industry-leading, rigorous quality control ensures stable performance even under high-intensity use.
An industry-first 300-hour full‑load durability aging test, far exceeding the typical 2‑hour testing standard for most speakers; the factory‑equipped drivers feature a fiberglass‑reinforced diaphragm, a high‑temperature‑resistant long‑stroke voice coil, and a titanium‑alloy tweeter, reducing failure rates under prolonged heavy‑load conditions by 75%—making them ideally suited for the Chuan Stadium’s demanding, all‑weather, year‑round outdoor use.
Core Acoustic Advantages of the Brand:
✅ Featuring proprietary waveguide horn technology, it significantly reduces sound pressure attenuation in large stadiums, with a single line‑array unit delivering coverage up to 120 meters—perfectly suited for Sichuan Gymnasium’s viewing distances exceeding 100 meters.
✅ Total harmonic distortion across the entire frequency range is ≤0.3%; vocals on ballads are delicate and clear, while rock hits deliver deep, rich, and full-bodied bass—perfectly suited to star‑level performances spanning all genres, including those of Hailaamu.
✅ Outdoor line-array speaker with an IP44 waterproof and dustproof rating, fully capable of withstanding the complex conditions of Hechuan’s open-air venues—high temperatures, significant day–night temperature swings, and sudden rainfall.
✅ Equipped with a Class D digital power amplifier and an intelligent DSP processor, it features integrated multi‑level overheat and short‑circuit protection, along with an automatic feedback suppression algorithm, effectively eliminating howling at the source.
✅ A thickened, corrosion-resistant birchwood cabinet paired with a lightweight modular design enables efficient assembly and disassembly of large truss systems, making it ideal for multi‑level, high‑position rigging in gymnasiums.
3. A comprehensive, all‑scenario product portfolio, with the flagship line array delivering powerful performance on the main stage.
AD has established four major product lines—covering theaters, outdoor performances, commercial entertainment, and government‑and‑corporate venues. For this concert, the brand’s flagship line‑array series was deployed across the board: Vt‑12/3LA main‑stage line arrays, Vt‑218 subwoofers, and SP15 stage monitors, complemented by a delay‑and‑reverb array to fully meet the venue’s acoustic requirements throughout the entire stadium.

II. Acoustic Breakthrough for the Gymnasium’s Vast Space | Germany’s AD Customized Full-Range Balanced Sound Reinforcement Solution
The Hechuan Sports Arena can accommodate 35,000 spectators. Its T‑shaped bowl‑shaped design, multi‑tiered cantilevered stands, and exceptionally long sightlines make it particularly prone to issues such as sound energy loss, acoustic field discontinuities, and insufficient sound pressure in peripheral areas. Meanwhile, the artists’ repertoire spans ballads, rock, pop, and electronic arrangements, placing extremely high demands on the system’s dynamic range, vocal fidelity, and low‑frequency punch. In response, the technical team has engineered a fully integrated, closed‑loop acoustic architecture tailored to the venue’s unique geometry:
1. Main PA core: Vt-12/3LA + Vt-218—ultra-low-frequency subwoofers that form the foundation of the sound field.
On the left and right sides of the stage, multiple Vt‑12/3LA three‑way flagship line arrays serve as the core of the main PA system. Leveraging their exceptional long‑range projection, they deliver rich vocal clarity and intricate instrumental details to the distant upper tiers. Complemented by stacks of Vt‑218 subwoofer arrays, these systems reinforce low‑frequency energy, ensuring that the thunderous drum beats of rock classics like “Qian Shan Wan Shui” and “Xilou Ernü” resonate deeply, filling the venue with a powerful, chest‑shaking atmosphere—while keeping low frequencies tightly contained and preventing unwanted reflections or extraneous noise.
2. Layered, time-delayed supplementary sound array, eliminating listening blind spots throughout the venue.
For the upper-tier, multi‑zone stands in the outer arena, AD delay‑compensation Vt‑12/3LA line arrays are deployed in a tiered configuration to precisely address coverage‑attenuation zones and balance the volume disparity between near and far fields. Leveraging DSP‑based intelligent phase alignment, the main‑array, subwoofer, and delay‑array phases are tightly synchronized, eliminating sound‑overlap and muddiness. As a result, whether in the front rows of the inner arena, the mid‑tier stands, or the far end of the upper tier, tone quality and loudness remain consistently uniform.
3. Stage SP15 monitor system, ensuring stable performance for the band and vocals.
The front of the stage is lined with SP15‑specific stage monitors, delivering exceptional mid‑ and high‑frequency clarity. Singers and band members can clearly hear their own vocals and instrumental accompaniment, allowing them to maintain precise control over the performance’s tempo. Throughout the entire event—spanning multiple consecutive shows—the system delivered flawless performances, earning unanimous praise from the band’s sound‑engineering team.
The complete German AD sound reinforcement system delivers three hours of stable, uninterrupted output, with a weather‑proof enclosure designed to withstand the variable conditions of outdoor venues. Featuring full‑range, low‑distortion acoustics, it faithfully reproduces vocal vibrato, guitar solos, and drum‑kit nuances. Feedback from tens of thousands of on‑site attendees confirms: crystal‑clear, transparent vocals throughout the venue; rich, well‑rounded bass that’s never harsh; and an immersive, studio‑quality listening experience from every seat in the stands.

III. Backed by a comprehensive service network, it has set the benchmark for sound reinforcement at stadium tours across China.
Germany’s AD, leveraging its exclusive distributor in Greater China—Guangzhou Huaxin Audio—has established a nationwide network of service centers spanning more than 30 provinces and municipalities. Internationally, it has expanded into Southeast Asian markets such as Myanmar, with over 100,000 completed projects worldwide in the live‑performance and theater sectors. For large‑scale outdoor events, its on‑time, zero‑failure delivery rate reaches an impressive 99.8%.
This concert featuring Hechuan, Hailai, Amu, and other star performers concluded successfully, once again demonstrating the cutting‑edge acoustic performance of Germany’s AD flagship line‑array system in a 10,000‑seat stadium setting. Moving forward, Guangzhou Huaxin Audio will continue to align with AD’s pioneering acoustic technologies from its European headquarters, further enhancing the domestic and Southeast Asian audio industry ecosystem. By offering genuine, traceable imported hardware, standardized acoustic engineering, and comprehensive full‑cycle lifetime maintenance services, we will provide a one‑stop, high‑end audio solution for touring concerts nationwide, outdoor music festivals, cultural and sports venues, and premium commercial spaces—steadily driving the standardization and quality upgrade of China’s professional live‑performance audio sector.
Beneath the sky of glowing lights in Hechuan, Germany’s AD delivers a pure, lossless soundscape that carries the youthful memories of tens of thousands, harnessing European acoustic technology to ensure every classic hit retains the authentic, live‑stage energy of its original performance.