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For over 30 years EISA has been selecting the most innovative, cutting-edge products for its prestigious EISA Awards. The Awards are debated and voted upon by groups of specialist judging panels covering the full spectrum of consumer electronics and photographic products, including Hi-Fi, Home Theatre, In-Car Electronics, Photo, Video and Mobile Devices. Key to the success and relevance of the annual EISA Awards lies in the evolution of its categories, always reflecting the changing trends and technologies of the consumer electronics world. Moreover, the Association itself continues to evolve, recently welcoming new members from Australia, Canada, India, the USA, Russia, Hong Kong and Japan.

TechDAS' Air Force III gets the Premium treatment, with upgrades throughout the design, a heavier platter and revised 'Air Condenser' – does it punch above its weight?

Positioned in the 'lower half' of the burgeoning TechDAS catalogue, the original Air Force III [HFN Sep '16] delivered more compact dimensions, the capability to handle up to four tonearms and a substantial saving over the One [HFN Jun '13] and Two [HFN Apr '15] turntables. Even with its new, performance-gap-closing fitments in Premium guise, the price is two quid shy of £29,000 – roughly a tenth the estimated cost of the forthcoming Air Force Zero flagship and £17,000 less than the Two Premium. A bargain, then?

They're crucial to hi-fi, but how do they work? Keith Howard explains all...

There isn't much in a modern hi-fi system that would be familiar to the great 19th century English physicist Michael Faraday. But a time-travelling Faraday – bemused by radio frequency communication, lasers and sound reproduction in general – would find something reassuringly familiar in the transformer. For it was he who first demonstrated that electromagnetic induction can be used to link one electrical circuit to another.

As a major partner in the BluOS project, it makes sense for NAD to have its own all-in-one network player, and it's aiming very high with this fully-loaded, fine-sounding system

No-one could ever accuse NAD of lacking ambition. Alongside its acclaimed core range, on which the company has built its reputation over the past four decades, it also has its Masters series of high-end components, several of which have been reviewed favourably in these pages in the past, including the EISA Award-winning M32 integrated amp – sorry, 'DirectDigital DAC/Amplifier' – [HFN Jul '18].