About NST AUDIO

A world-class team of experienced industry professionals

NST Audio, founded in 2014, is a world-class team of experienced industry professionals and experts in DSP-based hardware and software for the professional audio industries.

We have a combined experience of over 70 years, and draw on this to attain the finest possible audio quality and usability – This is the driving force behind NST.

We bring together broad expertise and depth of experience in the field of pro-audio, specifically Digital Signal Processing (DSP) and software design and implementation – we design hardware and software solutions for audio networks and to supply own brand, OEM and licensed DSP based software and hardware.

Experts in DSP-based hardware and software for the audio industries

The approach to product design, at NST, is underpinned by three fundamentally important philosophies: reliability, audio quality and functionality.

Utilising the very latest remote communication technology, while at the same time exploring its boundaries, NST is committed to the production of high fidelity, flexible products, which will compete in the market at the highest level.

We realise that sound is one of the most important and pleasurable of the senses, so we strive to develop products that bring as much quality and detail as possible.

Who We Are…


Dan Cartman

Managing Director

Software and audio design engineer, Dan Cartman, has over 18 years experience in the professional audio industry – Inspired by a day’s work experience at the legendary Abbey Road studios Dan studied acoustics at Salford university.
Wanting to pursue his passion for audio Dan started working at BSS Audio and later Turbosound and XTA Electronics, he has now joined forces with several other leading professional audio designers and created NST Audio.
Dan specialises in cutting edge audio product design, along with software control systems covering Microsoft Windows, Apple Macs and iPads.


Andrew Grayland

Technical Director

Industry legend, Andrew Grayland, has over 30 years experience in professional audio. Andrew studied electronics in Worcester while performing in bands, as well as mixing local bands and developing his own sound system. Andrew started his career at Klark Teknik and progressed to R&D manager, designing digital delay products and writing software for the DDA automated mixing consoles, plus he led the design of the Midas XL2 and XL3 mixing consoles. After Klark Teknik was purchased by an American corporation, he decided to pursue his passion for better quality sound in the DSP domain and form XTA electronics (from his spare bedroom). As Technical director, he led the design of equalisers, analysers, mic-splitters and digital processors. He also continues to be an active live sound engineer.


Phil Key

Technical Director

Audio design and sound engineer, Phil Key, has over 23 years of professional audio design and support experience. While studying electronics at Worcester Technical College, he joined XTA Electronics, performing electronics design mechanical engineering, software support and technical writing.
Phil has a passion for live sound and has extensive experience as both front of house and monitor engineer. He has been system tech and baby sitter on festivals for over 15 years including Glastonbury, Secret garden Party, Primavera and many others.
Phil brings his experience, as both a live engineer and software developer, to NST products.