A Name Rooted in Sound Since the 70’s

Engineered in the UK. Trusted by live event professionals, studios, and system integrators worldwide.

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4CAT Audio Systems

Compact, passive audio distribution over CAT cable. Designed for touring reliability.

Explore 4CAT

NexusFrame System

Modular signal routing system for large-scale infrastructure — flexible and scalable.

Discover NexusFrame

KelseyVerse

A future-ready configurable system for integrated audio + power — launching soon.

Explore KelseyVerse

Live Events & Touring

Rugged, reliable signal and power solutions for front-of-house, backline, and stage use. 4CAT and NexusFrame systems are tour-tested by professionals.

Studio & Broadcast

High-performance cabling and patching for professional studios, broadcast rigs, and OB vans.
Clean audio, no compromise.

System Integrators

Streamlined installations with modular, configurable builds.
Save rack space and setup time using pre-tested 4CAT and
NexusFrame packages..

Commercial & Venue Installs

Custom-made-to-order cable systems and power distribution units for theatres, halls, and fixed venue installations.

About Us

The Legacy of Kelsey Acoustics in Audio
Engineering

For over 40 years, Kelsey Acoustics has been delivering exceptional audio solutions that empower professionals in live sound, broadcasting, and studio environments. Our innovative products are designed to enhance performance and ensure reliability, leading to unparalleled success for our clients around the globe.

Why Choose Kelsey?

● British-engineered products
● Decades of industry experience
● Modular and scalable builds
● Support from real audio experts