Pre/Power Amplifiers

Joining the 'horsepower club', Chord Electronics rolls out its flagship pre and massive (and hefty) monoblock power amps. Does the sound live up to the imposing style?

At the risk of tempting fate, I wonder whether there's a power output arms race going on between manufacturers. The arrival of the new Ultima power amplifiers from Chord Electronics – at £30,000 apiece in either silver or black, along with the matching (and similarly-priced) Ultima preamp – suggests so. After all, their rated power of 780W/8ohm load is just north of the 768W claimed by Naim's 'Statement' NAP-S1 monoblocks [HFN Jun '15] – a target vaunted as 'one horsepower'. In practice, Naim's NAP-S1 achieved 795W/8ohm in PM's lab tests at the time, but it seems that in the current ultra-high-end amp scene, there ain't no substitute for cubic inches – or something like that.

I love the design of Classé’s Delta series products. The beefy build, curved fascias and contrasting silver and dark colours make for an extremely cool look. Add in a colour LCD screen as a display and source monitor, a remote control handset hewn from an aluminium ingot and Classé’s audiophile heritage, and the new SSP-800 processor is one of the most desirable pieces of multichannel lushness available today. I want one, can you tell? Some two years in the making and coming to market with a price tag around the £5000 mark puts this beast up against the Denon AVP-A1HD.

There cannot be many words more overworked than ‘classic’. Sometimes it means a previous model, kept in production ‘by popular demand’, perhaps because the new replacement model doesn’t quite cut it. Sometimes it means a new emulation of an old and once successful product, which may bear little real resemblance to a famous forebear. Conrad-johnson’s website straightforwardly lists all its discontinued models as ‘Classic Products’.

Martin Colloms shows some ART appreciation as the US company celebrates 30 years with a statement single-ended line-only preamp

Conrad-Johnson's 'Anniversary Reference Triode' has been some time in the making. In fact, an early version was developed seven years ago which has since been used as a lab reference. The ART is simply a remote-controlled line preamplifier, which at £15,000 is priced far beyond any previous Conrad-Johnson offering in this sector. It will be made in a limited edition of just 250 – probably just right for a modest production run at this elevated price level.

Based on the popular Inspiration series, the new Revelation range offers upscaled performance for gimmick-averse audiophiles. Its new pre/power is a formidable package

High-end hi-fi offers many flavours of weird and wonderful design, technology and functionality. In a sense, that’s what it’s there for, in order to differentiate itself from more prosaic, modestly priced products. Yet it’s all too easy to get lost in ‘surprise and delight’ features, wild styling or wilfully alternative engineering – and lose the plot.

Available in both monoblock and stereo chassis, the Centaur II has been a mainstay of the Constellation range for over six years. It's clearly not broken, so why change it?

While some brands maintain a steady rotation – evolution – of their products, others, including Constellation Audio, hit on the jackpot early and feel little inclination to change a winning formula. So while we've already tested the £73,500 Centaur II 500 power amp [HFN Dec '19] we missed out on the £53,998 Constellation Centaur II Stereo. Until now...

The Virgo preamplifier and Centaur monoblocks reviewed here are models from Constellation’s ‘economy’ Performance range, yet total £72,500. As for Reference prices, we shudder to think… While a pretty enough design, the Virgo is rather anodyne, its greyness John Major-like. A plain-Jane outboard power supply feeds it via two umbilical cables, connecting at the back where you find rows of both XLRs and phono sockets for every input and output – four sources, two sets of outputs and RS232 and USB inputs for networks and firmware upgrades. At the front, the central panel’s 432x230-pixel screen is flanked by rotaries for balance and volume, while other operations are accessed through menus activated by a row of buttons under the display panel.