Integrated Amplifiers

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Integrated Amplifiers
Krell S 300i (£2400)
Ken Kessler & Paul Miller  |  Feb 06, 2009
Debate that’s been raging since the dawn of hi-fi, Integrated vs Separates boils down to this: the former’s benefits over the latter include the removal of a pre-to-power cable connection, the need for one less AC outlet, less shelf space and – above all – the knowledge that the two sections are optimised for each other. Separates, however, counter with truly dedicated power supplies for each section, as well as isolation of the pre and power amp stages for less potential for undesirable interaction. Traditionally, the higher you go up the price scale, the more likely you are to opt for separates. Over the decades, milestone integrateds would appear that upset the formula: Sugden’s A48, specific models from Rogers, McIntosh, AR, et al.
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Integrated Amplifiers
Krell S 550i (£4998)
Hi-Fi News Staff  |  Nov 13, 2014
The Editor’s review briefing included the warnings: ‘It’s 29kg – you may need help in unpacking it’ and ‘The S-550i is a remarkably dense amplifier, probably the most self-effacing yet monstrously powerful integrated we’ve ever tested. ’ This new flagship integrated, replaces the FBI while the S-300i remains as Krell’s entry-level integrated at £2795. The S-550i is a true ‘big brother’: the sonic resemblance is uncanny save for a brutal power delivery. While the front panel suggests minimalism, that’s only because all minor settings are relegated to a menu system, eg, balance setting and input trim, which can also be accessed by the full-function remote.
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Integrated Amplifiers
Kronzilla Sxi (£16,190)
Hi-Fi News Staff  |  Nov 13, 2014
Yes, those valves – made in-house – really are a foot tall! And they radiate substantial heat once the SXI has been powered up for a few minutes, but KR Audio’s amplifiers are beautifully engineered. The company is based in Prague, founded by electronics engineer the late Dr Ricardo Kron in 1992. It’s a boutique firm of only a dozen or so people – skilled artisans who blow the glass and hand-craft the tubes. Such is the transparency of KR Audio’s Kronzilla amplifiers that at least of couple of German recording studios use them in mastering suites.
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Integrated AmplifiersVintage
Leak Stereo 30 Plus amplifier
Review: Tim Jarman, Lab: Paul Miller  |  Oct 23, 2020
hfnvintageWhile a near dead-ringer for the amp it replaced, this '60s integrated saw Leak leverage new technology to boost performance and widen its appeal. How does it sound today?

It's not unusual for a successful hi-fi product to be updated with mild revisions during its lifetime. Often the changes are minimal: a tidied-up fascia to match a new model added elsewhere in the range, or an extra function or minor circuit redesign. This was certainly not the case with the Leak Stereo 30 Plus amplifier of 1969, which replaced the Stereo 30 [HFN Oct '10] first seen in 1963. Side by side the two looked much the same, but inside the 30 Plus was all new in order to take advantage of improved technology.

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Integrated Amplifiers
Line Magnetic LM-34IA Integrated Amplifier
Review: Adam Smith, Lab: Paul Miller  |  Mar 22, 2021
Very big in the Far East since 2005, Line Magnetic offers a comprehensive range of tube-based disc players, DACs, phono stages and amps. Here's the entry-level integrated

We may now live in an age of digital and streaming, but the number and sheer variety of valve amplifiers on offer seems to be on the increase. Perhaps more remarkable are those designs that unashamedly hark back to a previous era, attempting to keep it alive by the use of modern technological twists. One of the main proponents of this philosophy is Chinese company Line Magnetic, the £1699 LM-34IA integrated reviewed here being just one of a wide range of its amps inspired by famous designs of the past.

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Integrated AmplifiersVintage
Luxman L-30 Amplifier
Review: Tim Jarman, Lab: Paul Miller  |  Sep 19, 2023
hfnvintageWith retro styling currently all the rage how will this integrated compare, especially considering it was the most affordable amp in Luxman's mid-'70s lineup? We find out

The L-30 was the cheapest amplifier in Luxman's 1976 range. Not that it looked anything like a budget model – rather, it had an almost intangible feel of quality and superior finish that in terms of showroom appeal put it above all but the very best offerings from the Japanese big names at the time.

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Integrated Amplifiers
Luxman L-509X integrated amplifier
Review: Andrew Everard, Lab: Paul Miller  |  Jan 01, 2018
hfncommended.pngThe style may be ‘retro’, but this powerful integrated amp from a Far East legend is no exercise in nostalgia: it lacks fashionable digital inputs, but has serious sonic appeal

OK, so it may help explain the whole ‘vinyl revival’ thing, from portable record players with greater tracking weight than a Caterpillar bulldozer to supermarket own-brand LPs, but looking to the past will only get you so far. Forget all that longer summers, colder winters and ‘jumpers for goalposts’ stuff: even nostalgia’s not what it used to be. Products must stand on their own merits in today’s competitive market.

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Integrated Amplifiers
Luxman L-509Z
Review: Ken Kessler, Lab: Paul Miller  |  Jul 08, 2024
hfnoutstandingTaking its cues from the industrial design and Darlington topology of the L-509X, the latest L-509Z variant demonstrates how subtle revisions can exert a big sonic impact

At first glance, since they look like twins, you might wonder what Luxman has done to the L-509X integrated amplifier [HFN Jan ’18] to justify the Z suffix. The pesky price increase from £8500 to £10,999 reflects six years of inflation and recent world turbulence, but don’t be fooled by nearly identical looks. The devil is in the details.

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HeadphonesIntegrated Amplifiers
Manley Absolute Headphone Amp
Review: Ken Kessler, Lab: Paul Miller  |  Mar 05, 2020
hfnoutstandingHigh-end headphone amps for connoisseurs of cans require total adjustability – has Manley Laboratories delivered the goods with the Absolute Headphone Amplifier?

Veteran makers of headphone amplifiers for studios, Manley Laboratories is taking on the extreme high-end of the domestic genre with a £4500 unit – the Absolute – that marries audiophiles' sonic requirements with the total control demanded of professionals. Company CEO Eveanna Manley says, bluntly, 'Our goal was simply to produce the most awesome-sounding and sonically flexible vacuum tube headphone amplifier!'.

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Integrated Amplifiers
Manley Stingray Itube (£2695)
Ken Kessler & Paul Miller  |  Sep 15, 2009
As inescapably all-pervading as swine flu or the taxman, Apple’s iPod is now the most popular source component of all. The generation gap is bookended by Those Who Like Physical Music Carriers and Those Happy To Use Music Files. And, as this is a transitional period, there are those who use both. We are in the middle of a revolution that will render wall-filling libraries of discs about as desirable as typewriters or cathode-ray TVs.
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Integrated AmplifiersVintage
Marantz Model 2226B receiver
Review: Tim Jarman, Lab: Paul Miller  |  May 24, 2022
hfnvintageBuy one of these late-'70s beauties secondhand today and you'll own an amp from a pedigree name with radio thrown in for 'free'. So, is this a receiver worth considering?

The receiver (tuner/amplifier) has always divided opinion, in the UK at least. While popular in Europe and the US, the British market never embraced these units to the degree it did separate tuners and amplifiers. And this wasn't because they could not rival a two-box counterpart on performance due to any technical reason. The real issue was that two top-quality units built into one housing could result in an indivisibly expensive product, one many consumers may not have been able to afford.

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Integrated AmplifiersNetwork Audio Players/Servers
Marantz Model 40n Streaming Amplifier
Review: Jamie Biesemans, Lab: Paul Miller  |  May 16, 2022
hfnoutstandingWhile Marantz's new 40 series shares its industrial design with the Class D Model 30, its core networking and Class A/B amp technology borrows from an earlier generation

By all accounts stylish, network-attached amps, including Cambridge Audio's Evo 150 [HFN Nov '21] or the compact NAD M10 and C 700 [HFN Jun '19 & Feb '22], are carving themselves a successful niche. So it's not surprising that Sound United, parent of Marantz, is making its own pitch. Marantz traditionalists needn't fret, however, for while the new £2199 Model 40n includes high-res wired/wireless streaming, USB and HDMI ARC inputs, the chassis is properly hi-fi-sized and the aesthetics are pure 'Marantz'.

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Disc PlayersIntegrated Amplifiers
Marantz SA-12SE/PM-12SE SACD Player/Amplifier
Review: Andrew Everard, Lab: Paul Miller  |  Dec 04, 2020
hfncommendedThis SE version of Marantz's former 'Japan only' SA-12/PM-12 player/amp combo borrows very heavily indeed from the costlier KI Ruby series, but saves £1000 into the bargain

So what do we have here? The new SA-12SE SACD/CD player and PM-12SE integrated amplifier, selling for £2999 apiece, are the latest in a long line of 'special edition' products from Marantz. Its family tree includes 'Original Special Edition' models, when other brands got in on the 'SE' thing, and the 'KI Signature' versions tuned by the company's late Brand Ambassador, Ken Ishiwata.

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Disc PlayersIntegrated Amplifiers
Marantz SA-KI/PM-KI Ruby SACD Player/Amplifier
Review: Andrew Everard, Lab: Paul Miller  |  Mar 08, 2019
hfncommendedMarking brand ambassador Ken Ishiwata's 40 years with Marantz, this 'Ruby edition' SACD player and integrated amplifier aim high. How precious are they?

We've been here before: ten years ago Marantz celebrated Brand Ambassador Ken Ishiwata's 30-year tenure at the company with a KI-Pearl pairing of player and amplifier [HFN Aug '09]. So its only fitting that, now he's clocked up another decade, we should have these latest KI Ruby models, limited to 1000 units apiece (500 of each in gold, 500 in black), and selling at £3500 for each unit.

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Disc PlayersIntegrated AmplifiersNetwork Audio Players/Servers
Marantz SACD 30n/Model 30 SACD/Network Player/Amp
Review: Andrew Everard, Lab: Paul Miller  |  Feb 08, 2021
hfnoutstandingTrickledown engineering wins hands down as the core technology behind Marantz's 12 series is buffed to a new polish, gaining network compatibility at an even lower price

The expression 'hot on the heels' is one thing, but to launch two sets of products seemingly offering similar features at much the same price might be seen as inviting customer confusion. Yes, that's just what Marantz has done, with the SA-12SE/PM-12SE SACD player and amplifier [HFN Nov '20] followed within weeks by the arrival of the 30 Series models – yes, an SACD player and amplifier. Add in the fact that both ranges draw heavily on previous models – to put it charitably – and one might well wonder what exactly is going on.

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