Pre/Power Amplifiers

Flying mole – now there’s an interesting name that would appear to fly against the face of convention. In this case, it’s the convention of Class A/B transistor amps and thermionic devices that glow in the dark. I am not even certain that they have moles in Japan. I’ve been to Tokyo a number of times and haven’t seen moles on the menu, so can only assume that they do not.

Here's an amplifier that doesn't just look different, it's different through and through. Ken Kessler hears a potent powerhouse from Down Under

There are two piles of magazines, some 150cm tall, sitting in my lounge. They consist mainly of hi-fi titles that I can't read until they're 'out of date'. Why? Because I don't want to be influenced by the reviews, and I don't always know whether or not I'll be reviewing a component I've just seen slammed or praised. Thus it was that I tried to avoid whispers about the Halcro amplifiers from Australia. Even so, I kept hearing about these 'amazing amps' from all and sundry.

Built into an enhanced H590 chassis but featuring 'sound tuning' from the P30A/H30A pre/power, Hegel's fully-networked flagship integrated gets off to a flying start

After an extended period of Covid and component shortage-related calm, Oslo-based Hegel has seemingly shifted into overdrive, launching multiple new products in just half a year. First up in 2023 was a major update to its flagship pre/power system in the form of the P30A and H30A [HFN Jun '23], followed by the Viking CD player [HFN Sep '23]. The third act is the launch of the H600, which takes over from Hegel's popular, top-tier H590 integrated streaming amp, and sells for £10,500 in a very dark grey, almost matt black finish.

The Norwegian brand’s latest amp is not just its most powerful integrated, but comes complete with network audio capability. Is this the ultimate one-box amp solution?

Obviously not afraid of a spot of (Russell?) crowing, Oslo-based Hegel describes its new Reference H590 integrated amp, just going on sale at £9000, as ‘Master and Commander’. Apparently it’s ‘A master at musicality’ and ‘The commander of any set of speakers’. Mind you, you might be tempted to forgive the company for its exuberance – after all, the new arrival is something of a monster, standing an AV-receiver-challenging 17.1cm tall, tipping the scales at 22kg and delivering over 300W per channel. Well, 301W a side actually, according to Hegel, making it at least 50% more powerful than its previous top integrated, the H360.

It wasn't a budget buy, but this late '70s integrated from the masters of the MOSFET spearheaded fresh thinking on amplifier design. But how does it sound today?

The advantages of using separate pre and power amplifiers over an integrated is a discussion that can still occupy audiophiles for hours. What was almost a necessity in the valve era became less technically significant once transistors were established, a quality solid-state preamp circuit being undemanding in terms of space and power.

The appearance might be retro but the performance is right up to date Deliciously retro in appearance, Icon’s huge flagship power amps began life in 2009 as the MB845s: so-called because they utilise a pair of the mighty 845 direct heated triodes. Still in production, the MB845s cost just half the price of these latest MkII versions, designer David Shaw significantly reworking an original design rated at 65W and ‘repositioning’ the model as a more prestigious high-end product. The MkII also employs an improved high current driver circuit employing two 6SN7 dual-triodes. High power output from the two 845 valves requires a truly massive power supply design too, so the MkII’s mains transformer has grown in size compared with that of the original MB845.

Purist 'analogue only' headphone amps have a new champion in the form of iFi Audio's flagship iCAN Phantom, designed for in-ears to electrostatics and all 'phones inbetween

When you state your headphone amplifier is the 'Rolls-Royce of flagships' you must be very confident that it's a clear cut above rival high-end devices. But that's exactly what iFi Audio is doing with the iCAN Phantom, shown for the first time at High End Munich in May '23. This £3749 analogue headphone amplifier is positioned above all its previous efforts, including the erstwhile flagship Pro iCAN Signature headphone amplifier, which remains on sale at £2299.