Integrated Amplifiers

Many moons ago I learned about the lack of sense in making predictions, as they usually prove wrong. Despite this I’m happy to posit that we are entering two ‘Golden Ages’. The first appears to be that of superb integrated amps appearing in a flood, including the Marantz Model 10 [HFN Jun ’25], D’Agostino’s Pendulum [HFN Jul ’25] and the Musical Fidelity Nu-Vista 600.2 [HFN Aug ’25]. But they are all high-end units. By contrast, the Quad 3 has a list price of only £1249, and it blew me away.

French audio marque Devialet has been on quite a journey. Its first product, in 2010, was the D-Premier [HFN Apr ’10], an innovative integrated amplifier showcasing the ADH (Analogue/Digital Hybrid) topology of designer/company founder Pierre-Emmanuel Calmel and colleague Mathias Moronvalle. Eye-catchingly designed, thrillingly innovative and a sonic marvel, Devialet’s amplifier was a shot in the arm for the hi-fi industry.

Two years ago, when Musical Fidelity relaunched its Nu-Vista hardware line with the four-box PRE/PAS amplifier system [HFN Mar ’23], owner Heinz Lichtenegger – whose Audio Tuning company had acquired the brand in 2018 – confirmed plans for two sibling integrated amplifiers. The first of those, the 800.2, surfaced a few months later [HFN Aug ’23]. Now, perhaps belatedly, comes the turn of what Lichtenegger told us would be the ‘lower-power’ Nu-Vista 600.2.

Hailing from Treviso in northeast Italy, Unison Research is a brand with an obvious love of tubes, to the point that you half expect to find a hot bottle or two incorporated in its Malibran and Max loudspeakers. Its CD players, the Unico CD Uno and Due [HFN May ’16], have tube-based output stages, while the solid-state amps in the same series have tube-based inputs. But the company is best known for its all-tube amplifiers, of which there are 15 spread across integrated, pre and power ranges.

Denon updates its AV receivers at the drop of a hat, but its stereo amplifiers typically enjoy a far longer shelf-life. Side-stepping its 110th anniversary PMA-A110 model [HFN Dec ’20] for a moment, the brand’s previous flagship, the PMA-2500NE [HFN Aug ’16], illustrates this longevity. Nonetheless, there’s a direct line between the PMA-A110 and the £2999 PMA-3000NE tested here, as numerous hardware tweaks devised for that limited edition model underpin Denon’s new stereo integrated.

As the EISA Awards jury noted this year [HFN Oct ’24], AV furniture is ‘often overlooked… but has a crucial part to play’. Monitor Audio would agree, and having acquired Blok in 2019, it has launched a redesigned Stax 2G system this summer. Retaining its predecessor’s wooden box-like supports and full-width shelves, the improved modular form-factor promises to be easier to configure and assemble.

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.