Home Closed Back Headphone Reviews Audeze Sine Review – Perfect Sound?

Audeze Sine Review – Perfect Sound?

by Stuart Charles Black
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Hello friend and Welcome aboard!!

Before we get into the Audeze Sine review, grab a snack, sit back and relax because…

You’ve come to the right place!!

What I will bring you in this review

  1. Ratings/Price
  2. Specifications
  3. Intro & Summary
  4. Pros
  5. Cons
  6. Video Review
  7. Amp/DAC requirements
  8. Who these headphones benefit?
  9. Thoughts from Stu’s notepad
  10. Consensus/Conclusion
  11. Final Word

Now without further ado, let’s get rolling!!

Audeze Sine

  • Price: Check Amazon! | Check eBay!
  • Design: Planar Magnetic.
  • Type: Closed Back.
  • Fit: Circumaural (Over-ear)
  • Driver Size: 70mm. What is a Headphone Driver?
  • Frequency Response: 10Hz – 50kHz.
  • Impedance: 20 Ohms. What is Headphone Impedance?
  • Sensitivity: >120dB. What is Sensitivity in Headphones?
  • Total Harmonic Distortion: <1% full spectrum @ 100dB.
  • Weight: 300g.
  • Color: Black.
  • Material: Metal, Plastic, Genuine leather on the outside of the earcups and headband, faux leather on the earpads themselves.
  • Cable: Cipher cable with 2.5mm stereo and 3.5mm to 1/4″ stereo adapter. The cipher cable is iOS only and does not come packaged. You will have to purchase separately. The Cipher cables inline remote contains a built-in Amp/DAC which allows you to control the sound how you want. Not only that but there’s also a dedicated 10-band EQ app that works with any music player on your phone.
  • Removable Cable: Yes.
  • Case: No.
  • Foldable: Yes. Folds flat.
  • Built-in mic: Yes. Can be used for phone calls and is SIRI compatible.


I fell in love with the closed-back Audeze Sine after demoing them at my local Audio Advice.

I used a NAIM DAC V-1 paired with an Oppo Receiver, and primarily listened to tracks from Chon’s album “Homey.”

I also listened to tracks straight from my old Samsung Galaxy S5 through Spotify.

Build & Style

The build quality seems pretty rugged overall.

I wouldn’t feel uncomfortable dropping these as they’d probably survive some abuse, but I also wouldn’t push the envelope too much.

Style-wise, they’re fairly utilitarian and unassuming.

There’s nothing too special going on aside from the fact that they were designed by a subsidiary of BMW.

So there’s that. xD

The only thing I’m not feeling is the leather on the outside of the earcups.

I think it’s one of the poorest design choices they could have come up with.


Because they easily get dinged up, nicked, and scratched, and when you run your finger across the material you’ll understand what I mean.

It just feels like a strange design choice and I would have rather seen a sleek matte black finish here.

It was obvious that the demo model I used had been through the wringer a few times and to be perfectly honest, it took away a little from their overall pleasing aesthetic.

Aside from that minor complaint, the Sine is a wonderfully built headphone that utilizes metal as well as genuine leather for the earcups and headband padding.

This is something you won’t see very often so I thought it was a nice touch.

Earcups & Headband Adjustments

The other thing that stands out here is the angled wires connecting to each cup.

As you’ll see in Metal571’s video below, this prevents the cord from pulling out if you happen to get caught on something and looks to be a solid design choice overall.

You’ll also enjoy the headband adjustments themselves as they move up and down in an incredibly smooth and fluid motion.

This allows you to easily get the best fit on your head without having to fumble with the click mechanisms most headphones employ.

Aside from that, the cups themselves are rather small which leads me to one of the few complaints I have with the Sine.


Being on-ear, comfort was perhaps the only thing holding these back from greatness when I demoed them back in 2017.

In fact, you can almost see why they were discontinued by Audeze and are no longer in circulation.

There were a few issues that I still remember clearly even to this day:

  1. The clamp was fairly tight which will bother you after some time and there’s no getting around that.
  2. Being Supra-Aural (On-ear), they will start to hurt your ears. So it’s kind of a double whammy.

On-Ear headphones in general are a rather dicey proposition.

Not only do they dig into your lobes, but oftentimes they leave traces of perspiration on the pads which can become ear-itating after a while.

I’ll see myself out.

That said, I think the sound made these worth it because it was truly something to behold.


I would classify the sound as smooth, accurate, and balanced, with a phenomenal tone and sound that feels correct and realistic.

In other words, the timbre here is absolutely phenomenal. What is Timbre?

That is, how an instrument sounds in real life vs. the way it sounds through a headphone driver – or its unique tone and what separates it from another instrument.

A lot of this is due to the fact that the Sine is indeed a planar magnetic headphone and will sound markedly superior to its dynamic counterparts.


As with pretty much all Audeze headphones, the bass here digs wonderfully deep but also sounds rather effortless.

If you’re familiar with the Audeze house sound, they essentially tune all of their headphones with a flat line bass, no roll-off below 100Hz, and no unnecessary bumps at 100-200Hz.

I personally prefer this type of low end but your mileage may vary.

In the case of the sub-bass, you’ll find almost no one complaining as it reaches down really well and as Ken Rockwell likes to put it, sounds “bottomless.”

Thanks, Ken Rockwell.


As far as the mids, they seem rather flat and honest. You’ll get a phenomenal sense of instrument separation and placement.

They reminded me of a Sennheiser HD558, only with more bass and more presence.

Obviously, the Sine is a much better headphone overall, but the way both portray music is very similar in that it’s going to be incredibly detailed and realistic sounding without being in your face.

Female vocals also have wonderful immediacy to them (meaning they sound close to you and very realistic), with the mid-range seeming a tad forward in some areas and flatter/more rolled off in others.

Again, the way the Sine portrays tone is perhaps its greatest asset and something that separates headphones in its class from other cheaper products.

This is an unobtrusive sound that just kind of provides you with the music as is but also does a wonderful job of revealing things you may not have been aware of before: background soundscapes, ambiance, breathy/throaty noises, etc.

The fact that all this comes in a closed-back on-ear is rather alarming when you think about it and is just one reason why the Sine still stands out to me after all these years.


Likewise, the treble is never harsh, rarely sibilant, and comes across as very pleasant.

As touched on in many of my Audeze articles, some may take exception to the somewhat darker/rolled-off sounding high-end, but I firmly believe this to be purely a matter of taste.

This is due to the fact that Audeze products are tuned better than your average headphone and this is something few people would argue with you on even if they don’t actually prefer the actual sound signature itself.

Metal talked a bit about it being a bit boosted at 10k and 16k, but I honestly didn’t find these overly bright though your mileage may vary.

Do keep in mind I last demoed them in 2017, so I’d definitely have to revisit the sound again to see what I think nowadays.

I personally found them to strike a nice balance between crisp and shimmery without the sibilance that cheaper products suffer from.

And, as Metal pointed out, it’s astonishing that for an On-Ear closed-back, there are really no issues with resonance which is something you may experience with something like an MDR-7506.


  • Accurate, smooth, and balanced.
  • Great mid-range.
  • The bass is very present but not overbearing. There’s a wonderful extension here into the sub-bass as well.
  • Durable and made of good materials.
  • Good sound isolation.


  • Clamp force is fairly tight, and these will become uncomfortable after a short period.
  • The leather on the outside of the earcups is questionable.
  • No replacement earpads are available as of 2022.

Video Review

Shout out to my boy Metal571!

Amp/DAC requirements

You’re not going to need an Amp or DAC if you happen to have an iPhone, but you will if you’re using an Android device.

Really my only complaint with these.

Also, as mentioned before, the Cipher cable will provide you with a built-in Amp/DAC, and coupled with the 10-band EQ app these are almost a no-brainer.

Who do these headphones benefit?

Good for:

  • Rock
  • Jazz
  • Hip-Hop
  • Indie

I found these to be great with pretty much all genres.

They seem to be very versatile, handling the frequency spectrum with ease.

They really make you sit back and relax, smile, and just nod your head.

The presence, balance, and smooth character they provide are just unreal at times.

Thoughts from Stu’s notepad

Schiit Magni 2 Review

The famous “Schiit Stack”

Soundstage & Imaging

The Soundstage is pretty decent for a closed back, but this is still a mostly in-your-head type of sound which is to be expected.

They do not fold up, but the earcups do rotate.

Though these are billed as headphones that will sound great out of anything, I would be wary.

As I mentioned before, they sounded a bit quiet out of my old Galaxy S5, so I would plug them into an amp if you can.

Way back when, I ran the Schiit Magni/Modi combo, but have since sold it.

My top recommendations nowadays for newer folks are the ATOM for neutrality and the K5 Pro as an all-in-one.



An extremely well-built set of accurate-sounding headphones, with comfort being the only caveat.

It’s not terrible, but you will be making frequent adjustments depending on the size of your melon, ears, etc. The sound overall is phenomenally balanced, smooth, and correct in Timbre.

Final Word

I would absolutely recommend these, but just make sure that you either:

  • A) Get the cipher cable for Apple devices or
  • B) Get an affordable Amp/DAC combo if you have a phone similar to mine because it will likely be too quiet for you.

2023 and beyond update

As mentioned earlier, the Sine has been discontinued (but still worth a look to make sure) so you may be wondering what I recommend to take its place as a closed-back headphone in this price range ($450 or thereabouts) and of this caliber.

Well, closed-backs are extremely difficult to recommend above the entry and mid-fi level, but one that’s always stood out to me is Dan Clark’s Aeon Flow. It’s a bit more expensive, but it’s a planar and sounds absolutely sublime albeit not as neutral as the Sine.

In fact, out of 125+ demoed units at the time of this revision, there aren’t too many other closed-backs that compare with the Sine outside of the Aeon and Sony’s MDR-Z1R (which is my top closed-back hi-fi recommendation).


Well, that’s about it for today my friend! I hope you’ve enjoyed this Audeze Sine Review.

Questions? Comments? Requests? Did I miss the mark on something? Looking for something else? Please let me know down below or Contact me!!

Does this headphone sound like something you’d enjoy? I would love to hear from you. Until next time…

All the best and God bless,





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Be sure to also check out my Reviews and Resources page for more helpful and informative articles!


Build Quality


Sound Quality







  • Perfectly Balanced Sound
  • Built Well


  • Uncomfortable after a short time

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donunus June 9, 2022 - 6:28 pm

An issue here that probably should be mentioned as a con are the earpads. There are no replacements available anymore, at least not that I know of

Stuart Charles Black June 13, 2022 - 10:34 pm

Thanks, man! Will add that.

alder October 20, 2023 - 6:35 pm

thanks for review
can you compare k371 vs sine?

Stuart Charles Black October 22, 2023 - 10:31 am

Hey Alder!

You’re welcome! And Sure. The K371 has a very elevated bass shelf across basically the entirety of the range (20Hz to around 100-200) and is more inline with the Harman target vs. the Sine which is very neutral and has a smidge of bass roll off. I would say both trebles are Harman-y in that they are fairly subdued and non-fatiguing. You’re not going to be getting a ton of sparkle with each, but your mileage may vary on whether this matters to you. The mids are actually similar-ish in the presence regions but the low mids of the 371 are a tad scooped.

All that said, in my opinion, the Sine is a vastly superior headphone and a lot of it has to do with the 371’s almost comically elevated shelf which just sounds horrific with certain tracks. That said, I do like the 371 for the most part outside of that. I just think the Sine is more in line with my own preferences.

Hope that helps!

Please keep me posted.



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