Pre/Power Amplifiers

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Review: Ken Kessler, Lab: Paul Miller  |  Apr 11, 2026  |  First Published: May 01, 2026
hfnoutstandingVanguard product in Nagra’s new Series II – positioned between the established HD and Compact ranges – is a triode tube preamplifier complete with an iconic Modulometer

So prolific is Nagra of late that the catalogue now has five families. I realise that sounds like I’ve just described the New York mafia. They consist of Compact, Classic, HD and Reference in ascending order of price, with the brand-new PREAMP II-S reviewed here introducing the new Series II.

Review: Mark Craven, Lab: Paul Miller  |  Apr 11, 2026  |  First Published: May 01, 2026
hfnoutstandingFrom the Italian marque arguably best known for wooden-chassis’d tube amps comes a new flagship pre/power boasting greater flexibility, innovative tech and an elegant look

While the upgrades that Unison Research made to its Triode 25 integrated amp were sufficient to warrant a ‘Black Edition’ suffix [HFN Jul ’25], the Italian brand’s decision to label its new pre/power amplifiers as merely ‘v2’ is to underestimate the uptick in performance. The Pre v2 (£5500) and DM v2 (£7750) are not only the flagship separates of its Unico range but are markedly different from what has come before, both outside and in.

Review: Jamie Biesemans, Lab: Paul Miller  |  Mar 20, 2026  |  First Published: Apr 01, 2026
hfnoutstandingFrom the Premium Audio Company Technology Centre in Osaka, part of the diverse US Gentex Corporation, Onkyo returns to its specialist hi-fi roots with a new pre/power

Onkyo has carved a name for itself as a leading maker of AV receivers, but the Japanese company has never lost sight of its two-channel roots, and neither have its fans. Onkyo’s M series power amps, including the M-504 from 1987, still trade for hefty prices on the secondhand market. Aside from its sonic capabilities, that model is valued for its large VU meters, a trend not lost on Onkyo when it came to setting the aesthetic for its new M-80 power amplifier. Paired with the P-80 streaming preamplifier, the system delivers the convenience demanded in 2026.

Review: Mark Craven, Lab: Paul Miller  |  Mar 01, 2026
hfnoutstandingTry as we might to resist descriptive tropes like ‘Swiss precision’, the plain fact is that CH Precision’s flagship amplifiers are the epitome of sophistication, style and... slam

We’re all familiar with the idea of ‘trickledown’, where the R&D of a flagship product then informs the development of a brand’s more affordable models. But what we have here, in CH Precision’s L10 preamplifier and M10 power amp, is a case of ‘trickle-up’. The Swiss marque has taken the designs of its 1 Series amplifiers [HFN Sep ’25], with which it carved its high-end reputation, and comprehensively upgraded them to birth a new top-flight package.

Review: Mark Craven, Lab: Paul Miller  |  Feb 03, 2026  |  First Published: Feb 01, 2026
hfnoutstandingAussie brand Halcro is in no rush – three years after the rebirth of its iconic turn-of-the-century Eclipse power amp, it has released a partnering preamp. Line-only, of course!

There’s boutique hi-fi and then there’s boutique hi-fi. Halcro, the famed Australian marque, at present has just three models in its catalogue – and one of those is the mono sibling of its Eclipse Stereo power amplifier [HFN May ’23]. Its only other offering is this new Equinox preamp with pricing to match the Eclipse, both selling for the same £44,000 in Halcro’s standard powder-coat finish, or a cool £50,000 for one of the ‘Signature’ premium paint versions.

Review: Andrew Everard, Lab: Paul Miller  |  Jan 28, 2026  |  First Published: Jan 01, 2026
hfncommendedA new owner, new engineers and the most significant release of ‘high performance, high value’ amplifiers in the brand’s 55-year history. We test the mid-series pre/power

The announcement in the summer of 2024 of new products from Audio Research Corp. (ARC) was not only the company’s largest-ever simultaneous release, but also, it said, ‘a fresh start [signalling] a promising future’, and ‘a renewed commitment to inclusivity and accessibility in the world of high-fidelity sound’. With the pre/power pair here priced north of £21,000, one might take that latter claim with a pinch of salt, although with the brand’s Reference Series pitched comfortably higher [HFN Apr ’25], these things are relative.

Review: Adam Smith, Lab: Paul Miller  |  Jan 04, 2026  |  First Published: Jan 01, 2026
hfnvintageYamaha celebrated its 100-year anniversary in style with a special series of ‘Limited Centennial Edition’ separates of which the CX-10000 control amp was especially prized

Everyone loves celebrating a big birthday, and the hi-fi industry is no exception. That said, very few manufacturers make it to the big 100 and so, when they do, the results are usually quite special. At the time of writing [late-2025] we are days away from Bang & Olufsen’s centenary, and Luxman released a complete system earlier this year to celebrate a century in business.

Review: Ken Kessler, Lab: Paul Miller  |  Nov 11, 2025  |  First Published: Nov 01, 2025
hfnoutstandingThe Dutch specialist broke with its all-tube tradition when it launched the EVO 300 Hybrid integrated amp. Its success has now inspired a bridgeable power amp version

Three questions sprang to mind when discussing the PrimaLuna EVO 300 Hybrid ‘poweramplifier’ with editor PM. The company has been merrily supplying all-valve products for 22 years, so the introduction of hybrid models seemed a non-sequitur, especially given that this particular amp’s £6498 price tag doesn’t preclude an all-tube design on the grounds of costs.

Review: Jamie Biesemans, Lab: Paul Miller  |  Nov 10, 2025  |  First Published: Nov 01, 2025
hfnoutstandingThis compact black alloy box, with colour display, is top dog in Bluesound’s series of multiroom music streamers, and standard bearer for its MQA-derived QRONO d2a tech.

Bluesound is less of a HFN regular than sister brand NAD, but many hi-fi buffs looking to add streaming to an (older) amp or active speakers will have encountered the brand’s Node streamer. According to the company the Node is its best-selling product, outshining its wireless speakers and soundbars. Earlier this year, the Node received a fourth major update, expanding the lineup with a cheaper Node Nano and an upmarket £899 Node Icon (N530). For the brand, founded to rival Sonos, it’s the first foray into what you could call a ‘real’ hi-fi territory.

Steve Harris  |  Oct 10, 2025  |  First Published: Oct 01, 2025
hfnvintageSteve Harris enjoys the sweet sounds and confident build quality of a Californian-made triode power amp that’s ready for a little tube rolling

If there’s one subject which arouses the ire of what designer and [HFN] contributor Ben Duncan calls the HLOs, (Hard-Line Objectivists) it’s hi-fi cables. And if there’s another, it’s the single-ended triode amplifier.

Review: Mark Craven, Lab: Paul Miller  |  Sep 23, 2025  |  First Published: Sep 01, 2025
hfnoutstandingFrom the pen of the designer behind the turn-of-the-millennium Anagram upsampler tech comes not one but two complete series of high-end digital/analogue components

Since launching in 2009, CH Precision, based in Préverenges in Switzerland, has carved itself a niche in hi-fi’s high-end. Moreover, although a product inventory spanning just two ranges, the 10 Series and 1 Series, might suggest some form of boutique minimalism, its design approach shows plenty of modern, technically innovative thinking. How so? The L1 preamplifier and M1.1 power amp on test here both offer user-tuning of their performance via a custom smartphone app…

Ken Kessler  |  Sep 14, 2025  |  First Published: Sep 01, 2025
hfnvintageThe Aragon 4004 power amplifier was acclaimed as the high-end bargain of ’88. Is this matching preamp the bargain of 1989? asks Ken Kessler

Experience has shown me that you don’t get something for nothing, so I don’t expect the state-of-the-art in hi-fi to cost the same as a toaster. Regular readers will note, however, that I do champion those rare components which defy their price tags, and get no greater pleasure than I do from learning that you don’t have to take out a mortgage for a taste of the best.

Review: Mark Craven, Lab: Paul Miller  |  Jul 21, 2025  |  First Published: Jul 01, 2025
hfnoutstandingFirst rung on Pass Labs’ ‘XA’ series of Class A amplifiers is a stereo model weighing in at a full 40kg, but don’t let the seemingly parsimonious 30W rating fool you – this is a beast!

In this era of all-in-one amplifiers and ‘crossover’ products, where even a tube amp might come to market with a built-in USB DAC, there’s something refreshing about Californian brand Pass Labs. Now approaching 35 years in business and named after founder and chief designer Nelson Pass (also the man behind Threshold in the 1970s), the company has long been known for its focus on frill-free, performance-first designs.

Review: Tim Jarman, Lab: Paul Miller  |  Jul 20, 2025  |  First Published: Jul 01, 2025
hfnvintageThe genius combination of red Perspex and black alloy heatsinking ensured the late Neil Burnett’s Albarry Music brand brought a welcome splash of colour to the ’80s hi-fi scene

Whatever else can be said about Albarry Music’s amplifiers, they looked fantastic – products that proudly had their works on show, but done with consummate grace and restraint. The M408 was the first amplifier from Albarry, one of many boutique firms that sprang up in the early 1980s in reaction to the mass-produced ranges from Europe and Japan.

Review: Jamie Biesemans, Lab: Paul Miller  |  Jul 02, 2025  |  First Published: Jun 01, 2025
hfnoutstandingWith a CD transport, network streamer and integrated amp already launched, Audiolab’s top-tier 9000 series is now made complete with this partnering pre/power amp combo

Since its debut in 2022, and with models introduced on a piecemeal basis, Audiolab’s 9000 series has sought to offer improved performance and specification above the company’s already popular 6000 and 8000 ranges. And now, with the launch of the 9000Q preamplifier/DAC and 9000P power amplifier, the family is truly complete.

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