AUSTRALIA – NEW ZEALAND: As Ed Sheeran launched his highly anticipated The Loop tour with a major run of stadium shows across New Zealand and Australia — ahead of dates in South America and the United States — Sennheiser’s next-generation Spectera platform has taken centre stage, transforming RF workflow, system scalability, and sonic performance across one of the world’s most demanding live productions.

For Monitor Engineer and RF Technician Dave White, who has worked with Sheeran since 2014, the evolution to Spectera represents the latest chapter in a long-standing relationship with Sennheiser’s wireless ecosystem. Over the years, the touring setup has progressed through multiple generations — from the 2000 Series to Digital 9000, and later Digital 6000 — each bringing incremental gains in sound quality, efficiency, and form factor.

“We’ve gone through quite a few generations of Sennheiser products over the last 12 years,” White recalls. “We always keep updated to get the best sound quality we can and work with new equipment as and when it’s appropriate. Over the years, we’ve moved from Sennheiser’s 2000 series to Digital 9000, before switching to Digital 6000 for the ‘Mathematics’ tour.”

However, the scale and complexity of The Loop tour — with its expansive stage design, dual-stage configuration, and growing number of performers — introduced new RF challenges that conventional narrowband systems would struggle to address efficiently. Spectera’s wideband, bidirectional architecture offered a fundamentally different approach.

“We had seen some small demos and I knew, with the stage design of ‘The Loop’, that Spectera would be perfect for us,” says White. “We are covering such a large area; Ed is on the main stage and then seamlessly transitions through to a B stage. If we were managing that with standard analogue IEMs, it would be quite a complicated system with lots of switching and over-gaining amplifiers to get even coverage. It can be done, but with Spectera, everything is off-the-shelf and designed for the job.”

At the heart of Spectera is a wideband RF system that significantly reduces the complexity of frequency coordination. Instead of managing individual channels and intermodulation calculations, engineers can allocate a single block of spectrum—dramatically simplifying setup.

“I must admit, when they released the technology, I felt a little bit like my RF coordination knowledge was obsolete,” White notes. “If you have 30 channels, for example, with a standard narrowband system, you would have to calculate and tune each one individually. With Spectera, you select a centre frequency, and it does all of them for you. You don’t need to worry about intermodulation… wireless is massively simplified.”

The impact on workflow has been immediate. White reports that RF coordination time has been reduced from around 30 minutes to just seven minutes — even when working conservatively — allowing more time to focus on system optimisation and performance refinement.

Beyond efficiency, the system has also delivered a noticeable improvement in audio quality, particularly in dynamic range and clarity.

“The big difference with Spectera is that even though on paper the dynamic range and volume response should be the same, it’s not,” White explains. “You audibly get far more depth of dynamic range… the techs are happy, too, and said, ‘we can actually hear things now’. There’s definitely a depth and a clarity we didn’t have before.”

This sentiment is echoed at front of house by Engineer Simon Kemp, who highlights the impact on Sheeran’s highly exposed performance style.

“Working with Spectera has been great so far,” says Kemp. “Moving from 6000 to Spectera has been a real sonic improvement. The sound of Ed’s guitars has become even more transparent, and the dynamic range has really helped him move from very quiet, gentle songs to loud, in-your-face moments.”

Kemp also notes the system’s ability to handle the percussive nature of Sheeran’s playing, where the guitar often doubles as a rhythmic instrument. Combined with the MM 445 capsule, the fully digital signal chain delivers consistent, high-clarity vocals across stadium-scale environments.

Reliability has also proven exceptional under extreme conditions. From torrential rain in Auckland to intense heat across Australian stadiums, Spectera has maintained uninterrupted performance.

“The packs have been extremely resilient,” says White. “The rain was biblical; it just didn’t stop… we didn’t have any failures at all with any of the handhelds or the bodypacks. You don’t really get much of a harsher environment than out here in Australia.”

To ensure seamless RF coverage across the expansive stage design — which includes a 50 by 18-metre LED video wall — White deployed 11 Spectera antennas across multiple zones, including stage left, stage right, and the B stage. This configuration enables uninterrupted coverage from backstage areas through to the audience, with seamless hand-offs throughout.

Spectera’s bidirectional transceiver design has also reduced hardware requirements, allowing each bodypack to handle both IEM and instrument signals. This has streamlined the overall system, reduced freight requirements, and enhanced flexibility for performers; including collaborators such as Beoga, whose hybrid acoustic-electronic setup benefits from fully mobile signal routing.

Monitoring and control are handled via Sennheiser’s WebUI, providing real-time access to key parameters including RF status, battery levels, and signal integrity—an essential capability for a production of this scale.

“Spectera has truly made my life in RF so much easier and more manageable, and reduced freight costs,” White concludes. “It’s cut down on rack space and made everything more streamlined, which is exactly the way the industry should be going.”