Theory Audio Design Adds PLC Series To Loudspeaker Controller Range

August 29, 2025

Press Release

Theory Audio Design has announced the release of new amplified loudspeaker controllers at CEDIA Expo 2025.

The premium audio brand introduces the PLC series, comprised of two 8-channel and 4-channel models respectively for complex residential, professional, large venue and live sound applications.

Powersoft’s Class-D amplification features on the models alongside a suite of other technologies, including SmartRail energy-management power supplies, Power Factor Correction and advanced DSP architecture.

Paul Hales, CEO of Theory, said: “Integrators, specifiers, consultants and end users have been asking us to bring Theory’s high-fidelity and high-output sound to their larger and more complex projects.

“With our recently introduced SR Series loudspeakers and manifold subwoofers, paired with the new PLC loudspeaker controllers, we are going after that segment head on with a small catalogue of immensely capable, innovative and flexible products.

“If you’re a fan of the small format Theory products, wait until you hear what Theory can do for your large format projects.”

Incorporating native Dante and AES67 Audio-over-IP networking, Theory’s loudspeaker controller platform offers flexibility in the form of three configurable 1Gb network ports with one PoE.

The PLC 4 and 8-channel loudspeaker controllers are compact at 1RU, but remain power dense.

Luca Lastrucci, CEO of Powersoft, added: “We are proud to embark on this close partnership with Theory, which places Powersoft’s patented amplification and DSP technologies at the heart of the new PLC line.

“Their decision to align with us validates our commitment to being the reference technology partner for power, efficiency and pristine audio in large-venue, live-sound and complex networked applications.

“Together, we will set a new benchmark for performance and reliability.”

Powersoft’s technology is widely recognised by the audio industry for its reliability, energy efficiency and sonic transparency, achieved through ultra low noise converters, linear phase FIR filters and Active Damping Control.