Aeon Flow Closed is one of the most overrated headphones at the market if not the most. After reading many positive reviews I decided to buy it but what a mistake! In my opinion this headphone is simply pretty bad. Actually it looks very good but that doesn't help me because I didn't buy this for fashion, bought it for the sound which is
unbelievably bad.
Normally I don't use sharp statements like "never buy this", instead I write like " People with X music taste should buy but people with Y music taste shouldn't. However, I can't recommend this headphone to anyone with any taste and preference. So as simply as that: I do not recommended Aeon Flow Closed to anyone.
Source Gear: Sennheiser HDV 820S ($2400) and Chord Hugo 2 ($2700). Let's make this clear so don't ask me if I am trying to run a planar headphone with an iPhone
Cable: Stock MrSpeakers balanced cable
Music: Well recorded lossless music from various genres, they sound quite good with high quality gear.
Packaging & design: Very good, my unboxing experience was wonderful until I wear the headphone and play some music. This headphone is aesthetically perfect but sadly this the least important criteria from an audiophile's perspective
Cable: It sucks! Even the most positive reviewers complained about the cable. Connectors are very unintuitive, connecting a cable to its headphone shouldn't be that hard. Stock cable is too long, microphonic and thick. I would be recommending a third-party cable if I was recommending the headphone in the first place.
Isolation: Sound isolation is solid, obviously better than open backs and better than most of the other mainstream closed backs.
Comfort: Out of many headphones I've tried, Aeon is the least comfortable one. I have very averagely sized head, hair and ears and I find almost every popular headphone (Sennheiser, Beyer, Focal, Sony etc.) very comfortable. But I couldn't find a way to wear Aeon more than 15 minutes. The headband adjustment is very unintuitive and doesn't help you to find a good fit. If you want me to wear this headphone for an hour you need to pay $100 to me, I am not joking.
This headphone has the unique teardrop shape and I doubt that was a good design idea because it is so uncomfortable. If the teardrop design was good, we would see some other headphones with similar shapes, right? There must be a good reason of why Aeon is the only teardop shaped headphone at the 1000+ headphones market.
Sound: Okay guys, this headphone sounds horrible, this is the best adjective to describe it. I paired Aeon with my high-end source gears (Sennheiser HDV 820, Chord Hugo 2) and this headphone sounds very bad with everything, from classical to EDM. Of course not bad for someone who has only listened to Airpods so far but if you have listened to any proper headphones you won't enjoy Aeon.
The overall sound is worse than many cheaper closed backs (any $300 + Sennheiser, Beyer etc.) and even worse than some Bluetooth headphones! People often criticize the bass of this headphone but I find the bass decent but mids and highs are wretched. It seems like higher the frequency worse the sounds gets.
Bass: Bass is decent. This headphone is not a bass monster but if the track has good bass texture it does a decent job. The bass is not impressive but at least not horrible like the following frequencies.
Mids: Things get very messy here, midrange of this headphone is simply garbage.
Vocals are very recessed and screwed. I think male vocals perform better than the female vocals though both are bad. In any vocal-instrument mix, vocals get overshadowed by the other elements and become almost inaudible. Instrumental performance is not good either; strings are decent but guitar and percussion are miserable.
Highs: As I said, higher the frequency worse the sound gets. Treble is the worst part of this headphone without a doubt.
There are usually two types of heapdhones: Some have energetic treble, some have laid back smooth treble. Somehow Aeon is both fatiguing, piercing and unexciting at the same time.
High frequencies are very distorted in general. Highs are not energetic or sparky but very fatiguing and I am not treble sensitive by any means. High note instruments such as violin and flute sound so unclear and broken. I tried quite a bit of EQ adjustments but incresing or decreasing the treble from the EQ didn't help at all.
Soundstage: Honestly I couldn't really pay attention to the soundstage due to how bad this headphone sounds, even a soundstage to the moon would be pointless given the garbage overall sound. What I can say is Aeon's soundstage is average, only as good as a typical cheap closed back headphone.
The overall sound is extremely disgusting... I had many headphones which are bad at certain genres but never had such a terrible overall headphone like this. Again, some much cheaper closed backs sound better. Believe me or not, some bluetooth headphones (I tried my Bose QC 35 noice cancelling hp) literally sound better.
SUMMARY: I ran out of negative adjectives during this review and often looked to the dictionary.
Stay away from this headphone. I've never seen such an overrated headphone like this (
for a suspicious reason all major audio blogs have good reviews while Reddit have bad reviews of Aeon , ). It is so uncomfortable, again I am not an alien and I have very averagely sized head, and the sound is absolutely broken. I do not recommend Aeon to
anyone since there are better alternatives at dramatically lower price points.