Integrated Amplifiers

Browse the catalogue of Colorado's PS Audio and you'll find both monstrous and slimline monoblock amps – the BHK Mono 300 [HFN Jul '16] and Stellar M1200/M700 [HFN Jan '21 and Apr '20], respectively – together with stereo power amplifiers, streaming DACs, integrated amps and preamps. And then there's the Stellar Strata, which in some ways is a distillation of PS Audio's diverse product line and tech into one box.

We may now live in an age of digital and streaming, but the number and sheer variety of valve amplifiers on offer seems to be on the increase. Perhaps more remarkable are those designs that unashamedly hark back to a previous era, attempting to keep it alive by the use of modern technological twists. One of the main proponents of this philosophy is Chinese company Line Magnetic, the £1699 LM-34IA integrated reviewed here being just one of a wide range of its amps inspired by famous designs of the past.

Synchronicity is a strange thing: for whatever reason of scheduling, I found myself embarking on this review a year to the day since the passing of audio legend Ken Ishiwata. The anniversary was marked by his daughter with a YouTube video of some joyously retro Latin music performed by an all-Japanese vocal group. 'Instead of making this a very sad day,' she wrote, 'we would like to share one of his favourite songs with you. He used to play this all the time, it brings back lovely memories and a smile upon our faces'.

When your brand has been around for over 60 years, designing a new integrated amplifier becomes a matter of balance. You need to weigh up the company's rich heritage with electronics that compete with the best new kids on the block. Perhaps something to caress the ears with valve warmth and character, combined with the grunt of a transistor output to drive even the most reticent of speakers? Enter the Supravox Vouvray.

Hi-fi companies marking anniversaries is nothing new – indeed, it seems something crops up almost every month to mark some celebration, from 25 years of the Bowers & Wilkins 600 Series upwards. However, few brands have the history to warrant an anniversary as significant as Denon, for this year the Japanese company marks not merely its centenary, but a full 110 years in business.

After nearly four decades' worth of using Dan D'Agostino's designs, from Krells in the 1980s through to his more recent, eponymous models (I use a Momentum Stereo as my solid-state reference and love it to bits), I thought I knew what to expect. Silly me: surprise No 1 provided by the D'Agostino Progression Integrated was that I could lift it without any assistance. Surprise No 2 was a price under £20k.

Most hi-fi enthusiasts know how many watts their amplifier can produce, but does that figure tell the whole story? In the early '80s, Harman Kardon's HCC (High Current Capability) range of integrated amplifiers gave listeners another number to think about, which was how much current an amplifier was able to source.