Imagine the pressure: delivering crystal-clear vocals at a stadium concert, battling interference from thousands of phones and massive LED screens. It's a sound engineer's nightmare, right? But what if there was a wireless system that could cut through the noise and make the artist's voice shine? That's exactly what Arxiduc Audio, a leading Japanese PA company, found with Sennheiser's Digital 6000 Series.
Based in Yokohama, Arxiduc Audio has carved out a reputation for providing top-tier audio solutions for diverse events, from electrifying music festivals to high-stakes sports tournaments and crucial corporate conferences. Since February 2025, Tokihiko Tokuda has steered the ship as chief engineer, masterminding the sound design and operations for their concert touring division. He's the guy responsible for making sure everything sounds perfect, no matter the challenge.
Tokihiko's journey with Sennheiser began over two decades ago. As he recalls, "I think it was a 3050 Series IEM. I remember how amazing they sounded. It was the beginning of IEMs, and everything was groundbreaking.” From those early days, he progressed to using the renowned 5000 Series and the advanced 5200 transmitters for countless live performances across many genres. This extensive experience eventually led him to embrace Sennheiser's digital systems. The Digital 6000 Series was introduced at Arxiduc Audio in April 2025.
Daiki Mori, the sales manager at Bestec Audio – a trusted Sennheiser dealer in Japan for over a decade – witnessed Tokihiko's enthusiasm firsthand. "I strongly felt Tokihiko’s passion for Sennheiser when we demoed the 6000 Series to him," Mori stated. "We look forward to seeing this trusted product being used on even more of his projects.”
So, what makes the Digital 6000 Series so special? According to Tokihiko, it all boils down to how Sennheiser brings vocals to the forefront. He emphasizes the "proximity of the vocals" as a key factor in his decision to use the system. "I think the reason why the 6000 Series is used so often in the NFL Super Bowl halftime show is because vocal proximity is so important. In the many live performances I work on, I often need to deliver the artist’s vocals more powerfully and clearly than in their recordings, so this sound quality is an essential element.”
And this is the part most people miss: it's not just about volume. Tokihiko explains, "I think Sennheiser is extremely good at bringing vocals to the front of the mix. Increasing the volume to make vocals more audible is a common practice, but there is a difference between ‘increasing the volume’ and ‘bringing the sound to the forefront.’ Even if the volume is kept constant in the mix, due to the structure of the human brain if the sound ‘comes to the front’, we hear the sounds that are closer to us first. With Sennheiser, the sound naturally comes to the front, so there is no need to forcefully turn up the volume – achieving this presence is a breeze.” It's about creating a sonic space where the vocals naturally command attention, without sounding artificially loud or strained.
Whether he's working on a high-energy rock concert, a vibrant idol performance, or a cutting-edge hip-hop show, Tokihiko relies on the versatile MMD 935-1 microphone capsule. "I’ve been using the wired e 935 for many years, so I chose a similar model, the MMD 935-1, as my main microphone capsule. Particularly when there are multiple musicians, I use the MMD 935-1 because it varies little both in terms of compatibility and overall balance. Depending on the characteristics of the artist, I sometimes use an MM 445 or MM 435.” He appreciates its consistent performance and ability to handle diverse vocal styles.
But here's where it gets controversial… Some engineers argue that no single microphone is truly universal, and that tailoring the microphone to the specific vocalist and genre is always necessary for optimal results. Do you agree with Tokihiko’s approach of using the MMD 935-1 as a go-to option, or do you believe in a more customized approach?
Beyond its sonic qualities, the Digital 6000 Series also boasts rock-solid connectivity. Tokihiko emphasizes this as a major advantage. "The live shows I work on can sometimes attract audiences of more than 10,000, and the larger the venue, the more difficult it is to manage the RF. We are often impacted by signals from mobile devices and LED screens. Even in such challenging environments, the 6000 Series maintains a stable connection, so we have no concern whatsoever. Being able to scan with the receiver is also an advantage. There are surprisingly few manufacturers that allow direct scanning with the receiver, but it’s convenient because it eliminates the need for additional equipment.” The ability to maintain a clear signal, even in the face of intense interference, is crucial for delivering a flawless performance.
Tokihiko believes that adding the 6000 Series to Arxiduc Audio's equipment arsenal will open up new possibilities. "I’d like to try the SK 6212, a compact bodypack transmitter, with horn sections. During the 5200 series era, I always used the SK5212 II P. When I attach microphones to the trumpets in the horn section, other manufacturers’ microphones are too large, and the artists have often complained that the size makes it difficult to play with them. Also, with trombones, the microphone body is secured in place with tape, but some musicians have pointed out that if it’s too heavy, it can affect posture during performance and the performance itself. That is why I’m thinking a compact, lightweight model would be ideal.”
Looking ahead, Tokihiko is also eagerly anticipating Sennheiser's next-generation wireless system, SPECTERA, launched in 2024. “I think we can expect a great deal from the stability of the signal and ease of planning, and I’m keeping an eye on reports of projects it’s being used on so I can hear what other engineers think of it.” He's confident that SPECTERA will further revolutionize the world of live audio.
So, what do you think? Is Sennheiser's Digital 6000 Series truly a game-changer for live sound, or are there other systems that offer similar, or even better, performance? Share your thoughts and experiences in the comments below!
