Pre/Power Amplifiers

This should have been the simplest, swiftest review for me to undertake: I would simply drop the stereo version of the Audio Research Reference 160M [HFN Aug '18] into my system in place of the Reference 75SE. Double the number of KT150s and double the power, a price tag of two quid shy of twenty grand, fond memories of the monoblocks still tugging at me after 18 months: the Audio Research Reference 160S should have been a doddle, easy to anticipate. But it wasn't.

Audiolab's 8000A first appeared on dealers' shelves in October 1983, and was arguably the least fashionable new integrated amplifier for a long time. It was everything that the cool audiophile cognoscenti of the time didn't like. How could anyone possibly produce a supposedly modern product fitted with tone controls, a headphone socket, independent source and tape switching and – perish the thought – a balance control? It was the very antithesis of what the sparse, minimalist, less-is-more 1980s was about. Despite this however, it sold like hot cakes at Christmas…

Having followed Auris Audio from show to show since its 2013 founding, I leapt at the chance to review its stylish Nirvana two-chassis headphone amplifier. I'm no longer shocked by the cost of high-end headphone amps, especially not at a time when £3000 headphones are common, so its £4900 price tag earned a mere 'Meh' from me. After all, I'd be putting it through its paces with, among others, the Audeze LCD-4Z, which sells for £3600.

Here's a fun game to play: look through the product catalogue of US manufacturer Balanced Audio Technology and try to spot the odd one out. It should only take you a matter of seconds because all of its current models, bar one, employ tubes in either their power or preamp stages. And if you still haven't realised I'm talking about the new REX 500 power amplifier, it's the one that's roughly twice as big as all the others.

With the boom in headphone listening outpacing even the uptake of new turntables, the hi-fi landscape has changed to a significant extent. Not only are hi-fi shows shining a spotlight on the personal listening experience but dedicated headphone events have spun out in their own right. And the hardware is changing, too: the market is awash with DAC/headphone amp combos, all the way from the tiny (and highly portable) AudioQuest DragonFly models [HFN Oct ’16], to the ‘transportable’ Chord Hugo 2 [HFN Aug ’18] and mains-powered units such as the iFi Audio Pro iDSD [HFN Sep ’18].