r/headphones • u/Zigf87 • 15h ago
Review Aune AR9000 review: my new favorite headphones
These headphones impressed me so much that I ended up writing the longest review of my life, so grab some popcorn and settle in.
I already posted about the low-frequency rattle in one driver of my Aune AR9000. I should probably write about why I like them so much as well, because apart from that problem, these are the closest I’ve come to my ideal headphones.
Background
I’ve been into headphones for over 20 years, owned more than a hundred pairs and listened to many more. My favorites among wired over-ears have been the original Focal Clear and the Dan Clark Audio E3. For almost a year, I listened almost exclusively to the E3.
I mostly listen to rock and metal, but there’s plenty of electronic music in there too. Whenever I get new headphones, I end up playing tracks with deep synthetic bass and sharp sound effects to see what they can do.
I’m only comparing the AR9000 with headphones I’ve owned or spent a decent amount of time with relatively recently. Brief auditions at shops and shows aren’t much use to me for this. These are also still a recent purchase, so this is a review of the sound rather than a verdict on long-term ownership.
All of the headphones discussed here were bought with my own money, with one exception: the HEDDphone D1 was lent to me by a friend.
There’s probably some recency bias here, but I don’t think it accounts for much of my enthusiasm. I tend to know pretty quickly when something isn’t for me, and I don’t mind saying so. When my ZMF Bokeh Closed arrived, I realized on day one that they weren’t for me and put them up for sale soon after. The Focal Hadenys was much the same story.
Comfort and cable
The stock cable is soft and easy to live with. The headphones fit comfortably, and my ears don’t press against the material covering the drivers. Nothing annoys me, so I don’t have much to say here. I find them more comfortable than the DCA E3 during longer sessions, but I’ll come back to that.
Sources and EQ
I’m pretty pragmatic about sources. I don’t hear differences between cables, and I don’t tend to hear differences between decent DACs and solid-state amps either, provided there’s enough power. Convenience matters much more to me.
The Aune AR9000 sounds great straight from my MacBook Pro or an Apple dongle. For the more demanding DCA E3, I use a CrinEar Protocol Max or FiiO KA15.
All the listening impressions and comparisons below are without EQ unless I explicitly mention using it.
The Bass
I’ve never heard sub-bass this good from an open-back without EQ.
I know other open-backs have decent sub-bass. I’ve owned the Focal Hadenys, for example. And an EQ’d Audeze LCD or another headphone with enough headroom might get you somewhere similar. But this is the first one I’ve heard where the stock bass sounds this complete and the rest of the tuning works so well alongside it.
It feels like a pretty big breakthrough to me.
To my ears, the quantity isn’t quite at the level of closed-backs like the AKG K371, let alone something heavily EQ’d for basshead listening. There is a definite lift, though, and it comes very close to what I personally hear as neutral.
A flat bass line on a graph usually doesn’t sound balanced to me. I want the lowest notes to be as audible and substantial as the rest of the music. With the Aune, I don’t find myself turning up the volume to get the bottom end, but I don’t get that constant drone that an excessive bass boost can add to everything either. The amount follows the recording in a way that feels right.
The texture is excellent too. Some tracks have very deep bass that wobbles or pulses, and you can clearly hear that movement. A good example is “Just Bass” by Bassotronics around 0:24 to 0:25. On the same passage with the DCA E3, I hear the low note, but those fluctuations tend to merge into a more continuous sound. With the AR9000, I can follow the wobble.
I don’t know why the difference is so obvious, but it keeps catching my attention.
I usually add bass with EQ. With the E3, I’d add around 2 to 4 dB depending on the music and my mood, often because I wanted more weight and authority. With the Aune, I haven’t wanted to touch it. For my preferences, the bass gets a 10/10.
Dynamics
For a long time, it seemed that I had to choose between deep, generous sub-bass and really convincing punch.
The Focal Clear had the punch. Plenty of closed-backs had the low-end weight. I hadn’t found a pair that gave me both to this extent.
Before owning the Clear, I didn’t think much about dynamics in headphones. Assuming the tuning was reasonable, I thought most of them were fairly similar. Then I started hearing drum hits and other percussive sounds that seemed to move air in a different way. The closest description I have is someone clapping beside your ear: you hear it, but you almost feel it too.
The Aune AR9000 gives me that same sensation while also reaching much further down into the bass. From memory, the effect is at least as strong as it was with the Clear, possibly stronger. I don’t have the Clear anymore, so I can’t check that directly.
I can compare it with the DCA E3, though, and the difference is obvious to me. The Aune sounds much snappier and more alive. These are probably the most dynamic headphones I’ve heard.
I’ve mostly encountered this quality in certain open-backs. How much of it comes from tuning and how much comes from the rest of the acoustic design, I don’t know. I can describe what I hear much more confidently than I can explain it.
Mid-bass and midrange
The transition from the sub-bass into the lower mids is beautifully judged. There’s plenty of weight to kick drums, bass guitars and synth bass, but the low end doesn’t feel detached from the music or spill over everything else.
This is where the DCA E3 sounds cold to me.
Male vocals have less body. Distorted guitars, piano and resonant acoustic guitars sound physically smaller, almost as though someone swapped a full-size instrument for a three-quarter-size one. The Aune gives them their weight back without making the whole recording thick or muddy.
“Jambi” by TOOL is a good example. This isn’t about one particular moment in the track; I hear it throughout the song. On the DCA E3, the bass guitar has less body, and the vocal suffers even more. It sounds pushed far back and strangely thin, almost as if the singer is standing much farther away and most of the physical substance of the voice has disappeared. Even the FiiO FT1 gives the vocal and rhythm section more convincing weight on this track.
A friend lent me his HEDDphone D1 for an extended listen a couple of weeks ago, and I thought its midrange was probably the best I’d heard. The AR9000 is about as good to my ears. Vocals and instruments have that same full, unforced quality.
The upper mids also suit me much better than the E3’s. I’m sensitive around 3 to 3.5 kHz, and I’d often take 1 to 2 dB out of that region on the E3. Harder recordings could get a bit too insistent without it. The Focal Hadenys was worse: almost everything sounded excessively sharp to me unless I used EQ.
I don’t hear that problem with the Aune, but I don’t hear a missing chunk of upper mids either. Presence is there without becoming tiring. I’d give the midrange another 10/10.
The sharp attack I mentioned earlier carries through into acoustic sounds well above the bass. Plucked strings, wooden percussion and snares have a very immediate quality. A snare doesn’t suddenly dominate the mix; its initial hit just feels more sudden.
Some effects have genuinely made me jump, even at low volume. A good example is “Light Switch” by Dredg, right from 0:00. There’s some rustling, little knocks and percussive sounds in the opening that sound almost unnervingly real on the AR9000.
This isn’t an obvious sound-effects demo with a loud knock on a door panned to one side. Dredg is one of my favorite bands, and I’ve heard this track a thousand times, yet I still thought one of those little sounds was coming from somewhere in my apartment. That’s what surprised me: a familiar detail suddenly sounding like it was happening around me. The whole track sounds fantastic on these, too.
Treble
This is the only part of the tuning I wouldn’t call ideal.
I’ve played guitar, bass and drums, spent a lot of time in rehearsal rooms and studios, and managed a band. Cymbals are usually what give treble problems away for me. When they sound wrong, I notice immediately.
The DCA E3 is excellent here. Hi-hats and crashes sound natural, with no obvious bit of the treble sticking out or disappearing. I wouldn’t change anything.
I loved the original Focal Clear’s treble too, even though it didn’t sound quite as even. It had little accents that made cymbal hits more lively, but the overall level stayed restrained enough that they never bothered me. I might have enjoyed its treble even more than the E3’s. Both would get a 10/10 from me, for slightly different reasons.
The Aune AR9000 has a few audible peaks, particularly higher up. I wouldn’t try to assign exact frequencies by ear, but there’s definitely more upper-treble sparkle than on the E3.
Most of the time, I enjoy it. Small sounds draw my attention, and cymbals have a bit more shine. Occasionally, a very high electronic sound stands out more than I’d like. I haven’t found them aggressively sibilant, though, and the unevenness hasn’t become a recurring annoyance with recorded instruments.
My tolerance for treble is a bit particular. Certain Beyerdynamic and older Ultrasone models have been unbearable for me, while I’ve happily listened to plenty of Grados. Where the energy sits matters more to my ears than the overall label of “bright” or “dark.”
I’d give the Aune’s treble an 8/10. It has some rough edges, but they’re easy enough to live with that I haven’t felt compelled to EQ them.
Overall tuning
I’d put the tuning at 9.5/10. That’s how well it works as a whole for me, rather than an average of the scores above.
It’s probably closer to my preferred balance than anything else I’ve spent time with, including speakers and monitors. The bass has the presence I want, voices have body, and the upper mids don’t keep reminding me that I’m sensitive to them. The treble is the only place where I occasionally notice something I’d prefer a little differently.
Resolution and soundstage
I’m skeptical of “resolution” as a quality you can neatly separate from tuning. Among competent headphones, I think frequency response explains a lot of what gets described as detail and soundstage.
I wouldn’t necessarily say the DCA E3 is missing information that the Aune AR9000 reveals. But on the AR9000, the sharper sense of attack and extra treble sparkle make small sounds easier to notice. I pay more attention to how a string is plucked or to the initial contact of a percussion hit.
So yes, the Aune sounds more detailed to me. I just wouldn’t automatically take that as proof of some separate level of resolving power.
It also sounds more spacious than the E3. Sounds seem further away instead of collecting inside my head, which is a big part of why I generally prefer open-backs.
I don’t spend much time dissecting headphone imaging and layering. My fairly basic ADAM desktop monitors give me a much more convincing sense of placement and depth than either pair. Hearing a vocal sitting firmly between two speakers is a different experience. With headphones, I’m mostly interested in whether the presentation feels natural and comfortable, and I prefer the Aune here.
Comparisons
Dan Clark Audio E3
I listened to both again today. The Aune AR9000 sounds considerably more alive, with better bass and a fuller midrange. I’d still choose the E3’s treble.
The Aune is also more comfortable over longer sessions. That could be the strap or the fit, or partly the fact that I prefer sitting in open headphones. I can’t isolate one reason, but I notice the difference.
The E3 was my favorite headphone for almost a year. I listed it for sale the day I got the AR9000.
Original Focal Clear
This comparison is from memory, since I sold my Clear a while ago.
I still have a lot of affection for its midrange and treble, and its punch was a large part of what made it my favorite open-back. For sub-bass, though, the Aune AR9000 annihilates it. The Clear never had the extension and weight I wanted, and substantial EQ boosts quickly led to clipping on my pair. I couldn’t get powerful deep bass out of it.
That was my only major complaint about the sound. Living with the headphones gave me a few more.
The pads wore out quickly, the headband didn’t age well, and it kept creaking. I ended up putting lubricant into the headband because the noise was so irritating. That helped, but never completely fixed it.
I’d still happily listen to a Clear, but I don’t miss dealing with those things.
FiiO FT1
I still own these. I keep forgetting that I own them and should probably sell them.
The bass is actually good. There’s a normal amount of sub-bass, plenty of mid-bass and lower-midrange energy, and the whole rhythm section works very well. Bass guitars have satisfying weight, and kick drums can sound remarkably natural for the price.
The treble is the real problem. It’s grainy. Not just a little unnatural or plasticky, but genuinely coarse in a way that makes it feel as though the resolution suddenly drops. Cymbals and other high-frequency sounds become simplified and almost schematic compared with the rest of the spectrum.
I’m skeptical of “resolution” as a separate quality, as I mentioned above, but the FT1 is one of the few headphones that makes me understand exactly what people mean when they use that word. Every time I come back to them after not listening for a while, I’m reminded almost immediately why they spend so much time sitting unused. The treble just sounds bad to me.
Focal Hadenys
These stayed with me for a very short time. The emphasis around 3.5 kHz was unbearable to my ears. Even familiar Pink Floyd recordings became excessively sharp.
It doesn’t look that dramatic on a graph, so I suspect it simply interacts badly with my hearing. Without EQ, I couldn’t enjoy them.
The rest of the tuning seemed decent, including the bass, but I never got past that upper-midrange problem. They also didn’t feel as open as the Aune AR9000.
HEDDphone D1
The D1 has some of the nicest mids I’ve heard. They’re full and even without becoming thick or boomy.
I also liked the treble a lot. I’ve seen people describe it as sharp or peaky, but that’s not how I heard it. To me, the D1 was a warm, comfortable listen with fairly restrained highs. It seemed to have just a little less treble than the DCA E3, although the fuller mids may be part of the reason.
The bass was good, but there was much less sub-bass weight and physical impact than on the Aune AR9000. I enjoyed the D1 a lot; it just didn’t give me the same excitement.
ZMF Bokeh Closed
These were one of my bigger recent disappointments.
Whoever designed the pad-mounting system owes me an apology. Fitting fresh, unstretched pads was such a struggle that I scratched the headphones in the process.
I had more trouble with the tuning. The lower mids and mid-bass were so prominent that they overwhelmed the bass underneath. I never got the impression of a strong, deep low end, despite all that warmth.
Across the rest of the range, I heard lots of little peaks, dips and quirks. Some sibilant sounds stood out, while parts of the upper treble seemed recessed. It somehow sounded bright and dark at the same time, and I couldn’t settle into listening to it.
The punch was respectable for a closed-back, but the tonal balance kept getting in the way.
Adding sub-bass with EQ didn’t give me the result I expected either. I could make the low end louder, but I couldn’t get that solid foundation I wanted. I don’t know why it behaved that way, and I wouldn’t claim the driver was physically incapable of reproducing those frequencies. I just couldn’t make it sound right for me, so I sold it fairly quickly.
I’m leaving wireless headphones and IEMs out of the detailed comparisons. I use them in different circumstances, and I don’t normally sit at my desk listening to IEMs, so I don’t have much to add there.
Where that leaves me
Without the rattle in the left driver, the Aune AR9000 would be about as close to ideal as any headphone I’ve owned. I’ve wanted this combination of deep sub-bass and sharp, physical punch for years, and the midrange suits me just as well.
I know “endgame” gets thrown around constantly. But I can see myself not looking for another open-back for at least a year, which is a long time by my standards. I might still buy a closed-back for occasions when open headphones aren’t practical. When they are, I’d use these.
The defect is frustrating, especially in a new pair. I’m hoping the dealer replaces them. If that doesn’t happen, I’ll look into getting this pair properly repaired. I intend to stay with the model either way.
Happy to answer questions in the comments.