Integrated Amplifiers

Expect the unexpected: it will be the first lesson in the book if I ever get round to writing Hi-Fi Reviewing For Dummies. You see, just because something seems like something else, it doesn't follow that it is... Too many times I've stumbled across a speaker sitting in the middle of a range, and apparently using the same recipe of drive-units, that turns out to be a complete outlier – for good or bad – in the way it plays music. The same happens with amplifiers, too. So, just because one model seems little more than a bigger version of another, don't expect it to have the same kind of balance of qualities, only 'more so'.

When the Sansui AU-D33 integrated amplifier was launched in 1982, it had a lot to live up to. Its predecessor, the AU-317II from 1980 [HFN Jun '15], delivered the sort of performance one would expect from a manufacturer of specialist hi-fi, thanks to its well engineered DC-coupled circuitry. The company's 'All hi-fi, everything hi-fi' slogan set out a clear manifesto – no transistor radios, no coffee machines, just quality audio products.

Seasoned audiophiles will remember MOON once being the name of Simaudio’s ‘reference-grade’ hi-fi hardware. But these days, the website for this Canadian marque is headlined ‘MOON by Simaudio’, and MOON, rather than Simaudio, is the branding that graces the front of its products. Moreover, Simaudio has also started curating new releases into ‘Collections’. The first of these, the North Collection, arrived in 2023 as a home for flagship models. Now we get the second-tier Compass Collection, led by the MOON 371 streaming amplifier on test here.

Headquartered in Kanagawa, Japan, Soulnote has created a trio of product ranges in just ten years. Its mid-range Series 2 comprises a phono stage, DAC and the A-2 integrated

Soulnote’s A-2, available for £6300 in silver or black, is an integrated amplifier with an air of the ‘old skool’ about it. No network or digital connectivity, just analogue all the way, and only line-level too, as the Japanese manufacturer prefers to keep its phono stages separate. There’s no form of system control (ie, 12V triggers), and the user experience is very much plug-in-and-play, aided by an elegant remote and even simpler front-panel display.

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.

Is it unkind to suggest some Italian brand names do not carry convincingly into English? Who keeps a straight face with a cooker called 'SMEG'? As for Synthesis – which also has the appropriately named Roma range – choosing to dub its Metropolis integrated amplifiers 'NYC', because New York is a Metropolis, actually makes sense, I suppose.