Absoulte Best Buy Amp Currently on Market Onkyo A-50 review
- ducurguz
- 15 minutes ago
- 13 min read
Onkyo spent most of the last decade as a cautionary tale. A name that meant something in the receiver years, then a bankruptcy in 2022, then a long quiet stretch where you weren't sure the brand still existed. So I came to the Icon A-50 with a raised eyebrow. The comeback integrated is a genre that usually overpromises.
What landed on my rack is more interesting than a nostalgia play. The A-50 is the centrepiece of the new Icon line, built around a simple, slightly aggressive idea: that you should be able to buy one box, add a pair of speakers, and be done. Streamer, DAC, MM/MC phono, HDMI ARC, room correction, headphone amp, and 110 watts a side, in a chassis that looks like it belongs in a system rather than a server rack. At roughly 1,499 to 1,599 dollars, call it 1,500 euro over here, the pitch is value through integration.
I covered the spec sheet and the fine print in detail already. This time I want to do the thing that actually decides whether any of that matters. I want to sit down, play real records, and tell you exactly what this amplifier does to the music. So that is where most of this review is going to live.
Features
The feature list is the entire reason this thing exists, so the short version: streaming is excellent and faultless, Roon Ready with the full slate of Connect protocols, so you drive it from whatever app you already use. The AKM AK4452 DAC is a serious converter, though note the coax and optical inputs cap at 24/96 while USB and network carry the hi-res and DSD. The MM/MC phono stage is real, not a token. HDMI ARC turns it into a living-room hub on one cable.
The one asterisk is Dirac Live. Room correction is built in, but the on-board version only runs 20 to 500 Hz. Full bandwidth costs a license on top of the purchase price. The bass-band version does the most acoustically valuable work, so it earns its keep out of the box, but go in knowing the full experience is an upsell.
One honest note on power before we listen. Onkyo first showed this claiming 140 watts into 8 ohms, and the shipping figure is 110. The 110 is a clean full-band rating at 0.08 percent distortion, which is the honest way to measure it. The 180 into 4 ohms is quoted at a single tone and looser distortion. So treat this as a real, well-behaved 110-watt amplifier rather than a 180-watt monster. As you will hear, that is plenty.
Build Quality
Pick it up and it tells you something honest. At 10.6 kg it is solid without pretending to be a tank. The 5 mm extruded aluminium front panel is the highlight, machined rather than stamped, and it does real work suppressing vibration. The volume control is weighted with that smooth, slightly resistant turn that makes you reach for the knob instead of the remote.
Inside, the engineering reads as deliberate: custom 10,000 µF capacitors, a copper bus bar for the high-current paths, an anti-resonant chassis, a linear power supply. The fanless design with the extruded heat sink means total silence, no whir creeping into quiet passages, which matters more than people admit. Fit and finish land where they should, clean panel gaps and a silver finish that looks calm rather than flashy. The remote is forgettable plastic, but you will use the app anyway. This is a well-made object that earns its shelf space.
Sonic Quality
Now the heart of it. I ran the A-50 mostly through network streaming from Qobuz and a turntable into the built-in phono, and I let the music tell me what kind of amplifier this is. It turns out to be a confident, slightly warm, gripped sort of amplifier, and the records make that obvious fast.
Bass and control
I started where all-in-ones usually fall apart: the bottom end. James Blake's "Limit to Your Love" is the test I always reach for, because it is mostly silence and enormous sub-bass, and the silence is the hard part. The A-50 nailed the start and stop of those low notes. The bass drops arrived with weight and full extension, then vanished cleanly into the black between them, no overhang, no smearing into the next phrase. That is the inverted Darlington output stage and the 4-ohm headroom doing their job, and it is the first sign this is a proper amplifier and not a lifestyle box.
Push it harder with something like Massive Attack's "Angel" and the slow, building bassline stays taut as the track grows. The A-50 grips the low end and controls it rather than letting it bloom. If your speakers tend toward a soft, generous bass, this amp will tighten them up. If they are already lean, it will not add warmth they do not have down low.
Midrange and voices
This is where the A-50 is strongest, and Johnny Cash's "Hurt" made me sit forward. His voice is all texture and damage on that recording, and the amp rendered every crack and breath of it with body and presence, the vocal sitting forward in the room without being shoved at you. When the track swells in the back half, the piano and strings rose behind him with the right sense of weight and intent. Nothing felt thinned out or clinical. There is real flesh on the midrange here.
Move to something cleaner, Diana Krall's "A Case of You" live, and the same quality holds. Her voice has air and intimacy, you hear the room, you hear the slight rasp at the edge of a held note, and the piano has natural decay rather than a digital edge. The A-50 treats voices as the centre of the music, which is exactly how I want an amplifier to behave.
Treble and detail
The big risk with a warm-leaning amp is a soft, rolled-off top. The A-50 dodges it. Steely Dan's "Aja" is my cymbal torture test, because Steve Gadd's drum work lives entirely in the upper registers and a harsh amp turns those cymbals into white noise. Here they shimmered and decayed naturally, with the metallic texture intact and zero spit or glare. You can follow individual cymbal strikes through the busiest passages, the detail is there, but it is delivered smoothly rather than thrown at you.
That is the signature: an unfatiguing top end that still resolves. On Rebecca Pidgeon's "Spanish Harlem" the brushwork, the upright bass, and the small percussion all sit in their own space with clear edges, and after three hours of this I had no listening fatigue at all. If you crave a treble that slices and sparkles aggressively, this is not your amp. If you want one you can live with every evening, it is.
Dynamics and scale
I worried the modest 110 watts might run out of road, so I leaned on it. Muse's "Hysteria" opens on that famous distorted bassline and then piles on, and the A-50 held the wall of sound together without compressing or going hard at volume. It has the headroom to deliver the slam when a track demands it. Daft Punk's "Giorgio by Moroder" builds from a spoken intro into a full electronic crescendo, and the amp tracked that swell from quiet to enormous with the dynamic contrast intact. This is not a polite, small-sounding amplifier. Give it a real room and real speakers and it has muscle.
Soundstage and imaging
Stage width and depth are good rather than spectacular, which is the honest ceiling of an all-in-one at this price. Pink Floyd's "Time" opens with clocks scattered across the soundstage, and the A-50 placed them wide and distinct, with believable space between elements. Yosi Horikawa's "Bubbles," a recording built entirely from spatial trickery, came across with precise left-to-right placement and decent front-to-back layering. What it does not quite do is the holographic, walls-disappear trick that separates costing several times more pull off. The image is wide and stable and convincing. It is not three-dimensional sorcery, and at this money it should not be.
Vinyl through the phono stage
The built-in phono deserves real credit, and "Dreams" from Fleetwood Mac's Rumours on vinyl showed why. The MC stage is quiet, with a low enough noise floor that Stevie Nicks' voice emerges from a genuinely dark background, and there is real dynamic life to the track rather than the flat, compressed sound a token phono board gives you. Mick Fleetwood's kick and the bassline had the same grip I heard from the digital side, and the whole thing sounded organic and full. For a phono stage that costs you nothing extra, with enough gain for real moving-coil cartridges, this punches well above its station. It is a reason to buy the A-50, not a footnote.
Headphones
The one weak link. The A-50 supports 8 to 600 ohms on paper, but the rated output is only 75 mW into 32 ohms. With easy, sensitive headphones it is clean and perfectly listenable. Plug in anything demanding, a high-impedance dynamic or a power-hungry planar, and it runs out of authority and dynamics. Treat the headphone jack as a convenience, not a feature you buy the amp for.
Dirac, in one paragraph
Switch on the room correction, even the limited 20 to 500 Hz band, and the bass tightens audibly. Running "Limit to Your Love" again with Dirac engaged, the low notes went from approximate to precise in my room, the modes that smear the bottom end simply gone. It is the single biggest sonic upgrade the unit offers, which is exactly why the full-bandwidth paywall stings.
Synergy
An integrated lives or dies by what you bolt it to, and the A-50 has clear preferences that the music makes obvious.
With the Wharfedale Super Linton, it is a lovely, rich match. The Linton's full, generous body plus the amp's warmth could tip into too much, but the A-50's grip keeps it disciplined. Running Cash's "Hurt" through this pairing, the vocal had glorious weight and the bass stayed articulate where a softer amp would have let the Lintons go woolly. This is a relaxed, big-room combination, easy to love for long evenings.
With DALI, the balance shifts the useful way. Into a Rubikore 2, that faster, airier tweeter counters the amp's warmth and pulls the whole presentation toward neutral. The cymbals on "Aja" gained a touch more sparkle and air, and Krall's voice got a shade more transparency. If you find the A-50 a little too polite on its own, a brighter, quicker speaker is the fix, and the amp has the resolution to reward the more revealing partner.
The rule that emerges: the A-50 flatters speakers that need control and damping, and it benefits from a lively top end if you want to offset its smoothness. And because Dirac handles the bass, you can pair it with speakers you would normally consider too bass-heavy for your room, then dial the low end back to where it belongs. That is flexibility most integrateds at this price do not give you. For cartridges, the MC stage is happy with mid-output moving coils, so you are not pushed toward an external phono box unless you are chasing the very high end of vinyl.
Competitors
The streaming integrated is now the most competitive category in hi-fi, and 2025 made it brutal, with two newcomers arriving underneath the A-50 that force it to defend every euro of its price. So let me do this properly, one rival at a time, with the wins and losses on both sides.
vs. WiiM Amp Ultra
This is the uncomfortable one, and any honest review has to say so. For roughly half the A-50's price, the Amp Ultra delivers 100 watts into 8 ohms and 200 into 4 from Class D modules with post-filter feedback, an excellent ESS DAC, its own room correction included at no extra charge, HDMI ARC, and a genuinely slick touchscreen and app. Read that back: comparable power on paper, room correction without a paywall, half the money. Where the Onkyo answers is everywhere the spec sheet cannot see. The A-50 has a real MM/MC phono stage where the WiiM has none of that ambition, a Class AB analog output stage with a linear supply versus switching amplification, Dirac's more sophisticated correction versus a simpler in-house system, Roon certification, and build quality in an entirely different league, 10.6 kilos of aluminium against a lifestyle box. Whether those things are worth doubling your spend is the real question this amp has to survive, and the answer depends on whether you hear the difference and whether vinyl matters to you. If neither, the WiiM is the rational buy, and I am not going to pretend otherwise.
vs. Eversolo Play
The other 2025 arrival, and a different kind of threat. Less power than the A-50, 60 watts into 8 ohms, but a beautiful large display, a genuinely excellent streaming platform and interface, a capable AKM converter, room correction, and a phono input, all well under the Onkyo's price. The Eversolo experience is more modern and more pleasant to live with day to day, the screen alone changes how you interact with the thing. But drive it hard into demanding speakers and the power gap is audible, it can strain where the A-50 stays composed. This is the choice between interface polish and amplifier substance. I lean substance, but I understand anyone who goes the other way.
vs. Cambridge Audio Evo 150
Punching upward now. The Evo is the class act of the category, 150 watts from Hypex Class D modules, an ESS Sabre DAC, balanced XLR input, MM phono, its own excellent StreamMagic platform, and that distinctive swappable side-panel design. It out-muscles and out-connects the A-50, and its resolution ceiling is a step higher. It also costs roughly double, and it has no room correction at all, which in a real room is not a small omission. If your room is well treated and your budget stretches, the Evo is the better amplifier. If your room misbehaves, and most do, Dirac on the A-50 can close a surprising amount of that gap for a lot less money.
vs. NAD C 700 V2
The most direct philosophical rival, similar money, similar do-everything brief. The V2 added a phono input and eARC, and it lives inside BluOS, the most mature multiroom ecosystem in hi-fi with the broadest native hi-res service support. That is its trump card: if you want music in five rooms under one app, NAD wins and the conversation is over. Against it, the phono stage is MM only where the A-50 does MC, the amplification is a hybrid digital design against Onkyo's traditional Class AB, and full Dirac is likewise an upsell in NAD's world. For a single-room, vinyl-inclusive system, I would take the A-50. For a whole-house system, I would not.
vs. Marantz Model 40n
The romantic option, a properly beautiful object with the warmest, most seductive voicing in this group and a level of casework finish the Onkyo does not quite reach. It is also meaningfully more expensive, its HEOS streaming platform is the weakest interface here, and there is no room correction. You buy the Marantz with your eyes and your heart. The A-50 undercuts it substantially and gives you more tools, but if the 40n's looks stop you in a showroom, no spec sheet is going to talk you out of it, and it should not.
And the answer nobody in this category wants to hear: separates. For the A-50's money you could pair a WiiM streamer with a serious used Class AB integrated, or a Cambridge CXA81 with a budget streaming front end, and on pure sound per euro that path probably wins while dodging the Dirac upsell entirely. What it costs you is boxes, cables, two remotes, and no room correction, and the A-50's entire argument is that integration done properly is worth paying for. It mostly is. But it is a choice, not a law.
The pattern holds, with a sharper edge than a year ago. The A-50 is not the cheapest, the most powerful, or the most refined option in any single category, and the WiiM Amp Ultra in particular makes its value case harder to argue than it used to be. What the Onkyo remains is one of very few units that is genuinely strong across every discipline at once, sound, build, phono, streaming, and correction, in one box. If that completeness is what you are buying, it is still the one to beat. If any single discipline is what you are buying, there is now a cheaper or better specialist for it.
Conclusion
The Onkyo Icon A-50 is the rare comeback that earns the attention rather than trading on the badge. The sound is the reason. It is confident and slightly warm with real grip, a midrange you want to live in, a treble that resolves without ever turning harsh, and the dynamic muscle to make 110 honest watts feel like more than enough. The phono stage is a genuine asset, the streaming is faultless, and the build feels like it will outlast the trends.
It will not out-resolve dedicated separates, the headphone jack is a convenience rather than a feature, and the full Dirac experience hides behind a paid license I wish had been included. Factor those in and go in clear-eyed.
But if you want one box, a pair of speakers you love, and no further shopping, the A-50 is one of the most complete answers on the market. Sit down with a record you know by heart and it gives the music back to you with body, grip, and a smoothness you can listen to all night. It does not just promise to be the only component you need. It comes closer to meaning it than almost anything near its price.
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Pros
Excellent overall sound quality with a confident, slightly warm presentation that remains engaging without sounding overly colored.
Outstanding midrange performance, producing natural, textured vocals with excellent body and realism.
Powerful, controlled bass with excellent grip, extension, and low-frequency authority.
Smooth, detailed treble that avoids harshness while preserving excellent resolution and long-term listening comfort.
Strong dynamics that comfortably fill large rooms despite its honest 110W power rating.
Wide and stable soundstage with accurate imaging and convincing instrument placement.
Excellent built-in MM/MC phono stage, quiet enough for moving-coil cartridges and good enough to avoid buying an external preamp for most users.
Feature-packed all-in-one design including streamer, DAC, MM/MC phono, HDMI ARC, Roon Ready certification, and room correction.
Reliable streaming platform supporting numerous streaming protocols with seamless operation.
Dirac Live room correction (bass range included) significantly improves bass precision and room performance.
Premium build quality featuring a thick aluminum front panel, linear power supply, anti-resonant chassis, silent fanless cooling, and solid construction.
Excellent speaker compatibility, especially with speakers that benefit from tighter bass control.
Honest power specifications, delivering clean full-bandwidth performance instead of inflated marketing numbers.
Represents strong value by combining multiple high-quality components into one chassis.
Cons
Full-bandwidth Dirac Live requires an additional paid license, with only 20–500 Hz correction included.
Headphone amplifier is underpowered, making it unsuitable for demanding high-impedance or planar headphones.
Soundstage is good rather than exceptional, lacking the holographic imaging found in more expensive separates.
Warm sound signature may be too polite for listeners who prefer a brighter, more analytical presentation.
Doesn't add warmth to naturally lean speakers, instead focusing on control and neutrality in the bass.
Remote control feels inexpensive, lacking the premium feel of the amplifier itself.
Optical and coaxial digital inputs are limited to 24-bit/96 kHz, requiring USB or network streaming for higher-resolution formats.
Faces intense competition from less expensive alternatives like the WiiM Amp Ultra and Eversolo Play, which offer better value in certain areas. But not overall better amps.
Dedicated separates can outperform it in pure sound quality at a similar budget if convenience is not a priority.
Does not match higher-end integrated amplifiers in ultimate resolution and refinement.
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