Integrated Amplifiers

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Review: Andrew Everard, Lab: Paul Miller  |  May 02, 2025  |  First Published: Nov 01, 2024
hfnoutstandingNaim Audio’s latest single-box solution takes the Uniti Nova, with its NP800 streaming platform, and swaps out the Class A/B amplifier for a higher power Class D engine

The term ‘game-changing’ is widely overused, but it’s fully justified in the case of Naim’s original Naim Uniti. Launched in 2009, it was in the vanguard of CD/streaming/amplifier products, a concept now more widely adopted in the past decade and a half. And in the 15 years since the original Naim Uniti appeared, the company has continuously developed the technology inside the series, not to mention spinning it off into component network players and its Mu-so network speaker systems.

Review: Ken Kessler, Lab: Paul Miller  |  May 17, 2021
hfncommendedStalwart of Germany's single-ended tube scene, Octave Audio also produces hybrid and push-pull amplifiers, including the 'Class A' V70 integrated featured here

Which are you? The minimalist who wants an integrated valve amp bearing only clearly-labelled inputs, source selector, volume control and speaker terminals? Or do you prefer a 'fully loaded' device with total flexibility? The former is intuitive, and any experienced hi-fi user thinks of such units as virtually 'plug 'n' play'. Germany's 30-year-veteran brand Octave Audio has, in its V70 Class A, an amp that sits between both camps and yet I was compelled to digest its 36-page manual.

Review: Mark Craven, Lab: Paul Miller  |  Jan 18, 2021
hfnoutstandingThe typically modest, functional styling of this 'entry-level' mostly-Class A integrated amplifier belies its less-than-modest capabilities, with power and sound to spare...

There's something comforting about a product with a singular focus, and Pass Labs' INT-25 fits that bill. A line-only integrated, it steers clear of the digital inputs, network functionality and onboard phono stage offered by many competitors. Instead, it presents itself simply as a conduit between your source(s) and speakers, combining a FET-based preamp and Class A power amp and nothing else. If that sounds somewhat 'basic', Pass Labs' history and the amplifier's £7200 price tag should suggest it's anything but. As does its mastery of music – but I'm getting ahead of myself…

Review: Mark Craven, Lab: Paul Miller  |  Dec 08, 2025  |  First Published: Dec 01, 2025
hfnoutstandingThe Italian manufacturer has adopted a no-compromise philosophy for its flagship ‘InPoL’ amplifier – the result is a 140kg, all-analogue integrated blending tubes and transistors

In high-end hi-fi, it’s common to see the phrase ‘two-man lift’ applied to heavyweight loudspeakers, amplifiers and subwoofers. Yet the top-of-the-line InPoL Legacy from Italian manufacturer Pathos goes one (well, two) better. This integrated amplifier, priced £51,995, arrives in a purpose-built wooden crate on wheels, along with two metal ‘pull-up’ bars that slide underneath the chassis once the crate has been disassembled. It’s then a four-person job to lift the bars and manoeuvre this 140kg beast into position.

Review: Mark Craven, Lab: Paul Miller  |  May 27, 2026  |  First Published: Jul 01, 2026
hfnoutstandingIntroduced in the ’90s, the TT integrated debuted the single-ended Class A InPoL circuit that’s become Pathos’ calling card. Now it’s a little more powerful, refined and... heavy

When Italian hi-fi manufacturer Pathos was established in 1994, its first product was an integrated amplifier showcasing co-founder Gianni Borinato’s bespoke ‘InPoL’ circuit design. Named the Twin Towers, because of its large, vertically aligned heatsinks, the amp claimed 2x30W/8ohm and sold for £3250. Skip ahead some 30-odd years and the model remains a mainstay of the company catalogue, albeit with important running production changes.

Review: Mark Craven, Lab: Paul Miller  |  Aug 09, 2021
hfncommendedDescribed as the 'sister brand' of solid-state stalwarts Audio Analogue, Pegaso has just one product and it's an all-tube integrated amplifier that claims Class A, all the way...

As a new arrival from Tuscany, Italy, and with just the P50A integrated amplifier in its inventory, it's possible you've not yet heard of Pegaso. On the other hand, many readers will be familiar with fellow Italian brand Audio Analogue [HFN Nov '20 & Feb '20], which has been in operation since the mid '90s. Both are stablemates sheltering under the umbrella of AF Group SRL (also the home of AirTech), and they share more than just a postcode.

Ken Kessler and Paul Miller  |  Jul 08, 2011
Upscale integrateds must be the ‘new black’: following Storm, EAR-Yoshino, Quad and others, the Audiant 80i is a charmer from Down Under – and with an onboard DAC too In its 37 years as an amplifier manufacturer, Perreaux has gone from its 22W/ch GS 2002 integrated debut product to eye-watering 750W monoblock powerhouses. Separate preamps, professional gear, D/A converters, CD players – it’s a full-line brand that’s maintained a global reputation despite the remoteness of a manufacturing base in New Zealand. Along the way, Perreaux was bitten by the MOSFET bug. Having decided not to go with valves as far back as 1974, due to the inconveniences of size, weight and heat, and not entirely happy with the sound of bipolar solid-state devices, MOSFETs seemed a godsend.
Review: Ken Kessler, Lab: Paul Miller  |  Apr 01, 2018
hfncommended.pngStill billed as 'The World's Most Powerful Integrated Amplifier', Perreaux's MOSFET flagship has been tickled-up with a new digital input module. And more power too...?

Side-by-side, you'd be forgiven for seeing no changes between the Perreaux Eloquence 255i integrated amplifier and the earlier 250i [HFN Aug '12]. Same rotary, same display, same number of buttons – even the price would leave you clueless, the six years between them inflating the £5695 of the earlier unit to £6895 in standard, line-level-only trim. Given the recent drop in the value of Sterling, that alone could account for the increase, so full marks to Perreaux.

Review: Tim Jarman, Lab: Paul Miller  |  Nov 15, 2022
hfnvintageFuss-free and highly affordable, this compact valve integrated was an early foray by the Dutch company into the '60s separates market. But how will it sound today?

How much power does your present amplifier produce? Expectations have risen over the years to the point that wattages in the three-figure range are no longer exceptional. But is this necessary? The Philips AG9016 seen here is rated at 2W per channel – not even sufficient to satisfy the fairly lax requirements of the DIN 45 500 'hi-fi' standard, which requires six watts.

Review: Tim Jarman, Lab: Paul Miller  |  Feb 11, 2026  |  First Published: Mar 01, 2026
hfnvintageTop dog in a five-strong, pre-CD range of stereo amplifiers and receivers from Philips, the AH 606 also marked a turning point in the brand’s aesthetic design language

In its hi-fi heyday, Philips was one of those audio brands that seemed to delight in being unconventional. Be it in styling or engineering, its products were usually distinctive, which delighted some but confused just as many. Neither is it necessarily an advantage when the equipment has to be combined with units from other brands to form a system. Philips receivers in the early 1970s, often made in the firm’s factories in Finland, were difficult to build a system around if you wanted to use anything other than Philips source components and loudspeakers.

Review: Tim Jarman, Lab: Paul Miller  |  Apr 27, 2020
hfnvintageMarketed by Philips yet made by Marantz, is this purposeful-looking integrated packed with premium components an unsung hero of hi-fi's past? It's time to find out...

Philips should have been a dominant player in the hi-fi arena, yet many of its products somehow missed the mark. Despite these repeated failures, every now and again the sleeping giant would wake from its slumbers and produce something miraculous – Compact Disc, Motional Feedback speakers – only to disappear until inspiration struck again.

Review: Ken Kessler  |  Apr 01, 2025  |  First Published: Feb 01, 2025
hfnvintage Designer looks, battleship build quality, superior sonics... Ken Kessler is beguiled by an amplifier that shows off its manufacturer’s true colours

True story: a knowledgeable audiophile arrives at my listening room in mid-November. Pink Triangle’s Integral integrated amplifier is driving a set of Wharfedale Diamond 8.1s, its badge covered with tape. I state to this collector of some repute with a memory spanning 35 years, ‘You will never guess who made this amplifier. Never’.

Review: David Price, Lab: Paul Miller  |  Aug 01, 2018
hfnoutstanding.pngInspired by the success of its A-70 integrated from 2012, Pioneer has trickled down the tech and combined it with a new close-coupled PSU in this DAC-equipped budget amp

Having recently achieved the grand old age of 80 years, the Pioneer Corporation is rightly celebrating the fact. While some believe that all Japanese companies are the same – faceless consumer electronics giants with sprawling factories full of robots, making generic white goods – anyone who's lived in Japan knows this couldn't be further from the truth. In practice, each organisation has its distinct identity and corporate culture, going about things in its own special way.

Richard Stevenson & Paul Miller  |  Nov 06, 2009
Pioneer’s flagship Susano amplifier arrived amidst an unseasonable summer tempest that lashed the south of England with high winds and heavy rain. An auspicious start for an amplifier that derives its name from the ancient Japanese god of storms. Sadly, divine intervention didn’t go so far as helping me carry it to the listening room because it’s the size and weight of a small stone temple. The SC-LX90 is Pioneer’s statement of intent at the upper echelons of the AV amplifier market, sharing the same piano-black fascia and cosmetic cues as the company’s top-end plasma screens.
Ken Kessler & Paul Miller  |  Jul 06, 2009
Having played with a number of PrimaLuna ProLogue products, I’m safe in saying that each and every one represents astonishing value because 1) they’re made in China, but 2) to European standards. They single-handedly established and provided credibility for the lower entry-level price point for rock-solid valve products, and showed that China was ready to compete with the rest of the world in hardware manufacture, if the proper structure was applied. With DiaLogue, PrimaLuna is attacking the next price point, with the same vigour. That in itself should be enough to make the DiaLogue Two a fascinating prospect for those with up to £2000 to spend on amplification.

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