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Drop + Grell OAE1 Headphone Review

Rate this headphone:

  • 1. Poor (headless panther)

    Votes: 123 80.4%
  • 2. Not terrible (postman panther)

    Votes: 22 14.4%
  • 3. Fine (happy panther)

    Votes: 6 3.9%
  • 4. Great (golfing panther)

    Votes: 2 1.3%

  • Total voters
    153
At $40 I got a pair....and am very happy I did. Frankly, they changed my view a bit of the efficacy of headphone measurement.

I listen to music through headphones more than any other source. I have owned multiple Sennheiser 600 series, most of the Beyers, and lots of HiFimen.

I expected to hate the OAE-1, both because of Amir's measurements, and because of my head's measurements (huge, size 8, which many reviewers claimed would be disqualifying). They do have quite a firm clamp, but they fit my head fine and because they do not touch my ears, the clamp, even with glasses, is fine. The left/right channel balance changes a lot, as does the frequency response depending on where they sit on my head. In no case would I call the sound accurate....but.

On much of my music they sound wonderful to me. Yes, they are bass forward, yes, some details are smeared compared to my favorite Open Back Sundara, but they are very musical, romantic, spacious, lovely on many things. Not what I would pick as my only headphones, but quite nice when I want an hour of bliss on less complex or orchestral listening. I'm experimenting with some of the EQ curves posted for them, but am not sure I like them better.

So, what to make of this? Alex Grell is not an idiot, far from it. Recent interviews do not show signs of senility. He knows how to design "accurate" headphones and designed something different here. What does accurate actually mean for headphones? The "target" curve in the 1st post (I understand) is based on Harman Preference tests, so is not necessarily accurate either, right? Unlike Amp/Dac/ or even in room response speaker measurements, it measures how closely headphones align with preferences not reality. Am I mistaken?

Listening to the OAE-1 I am reminded of Malcom Gladwell's comparison of the spaghetti sauce vs. ketchup markets. Americans agree that while ketchup can be spelled 2 ways, it should taste one way. The ketchup "Harman" target is strongly agreed on. Markets however, have determined there is not one "best" spaghetti sauce target. I like Rao's pepper/mushroom, someone else will prefer spicy marinara.

Perhaps Grell is the "Rao's" of headphone design who decided to make a new flavor. However, market response to the OAE-1, the discounted $40 price suggests, means headphones are like ketchup after all?

Perhaps with headphones, perfect marinara can be transformed to pepper/mushroom (if you really want that) through DSP EQ curves, but I think more than that is happening here. Forward mounted drivers firing at the entire pinna may impact more than EQ. I do not know, but I do like mine.
 
On much of my music they sound wonderful to me. Yes, they are bass forward, yes, some details are smeared compared to my favorite Open Back Sundara, but they are very musical, romantic, spacious, lovely on many things. Not what I would pick as my only headphones, but quite nice when I want an hour of bliss on less complex or orchestral listening. I'm experimenting with some of the EQ curves posted for them, but am not sure I like them better.

So, what to make of this? Alex Grell is not an idiot, far from it. Recent interviews do not show signs of senility. He knows how to design "accurate" headphones and designed something different here. What does accurate actually mean for headphones? The "target" curve in the 1st post (I understand) is based on Harman Preference tests, so is not necessarily accurate either, right? Unlike Amp/Dac/ or even in room response speaker measurements, it measures how closely headphones align with preferences not reality. Am I mistaken?

Listening to the OAE-1 I am reminded of Malcom Gladwell's comparison of the spaghetti sauce vs. ketchup markets. Americans agree that while ketchup can be spelled 2 ways, it should taste one way. The ketchup "Harman" target is strongly agreed on. Markets however, have determined there is not one "best" spaghetti sauce target. I like Rao's pepper/mushroom, someone else will prefer spicy marinara.

Perhaps Grell is the "Rao's" of headphone design who decided to make a new flavor. However, market response to the OAE-1, the discounted $40 price suggests, means headphones are like ketchup after all?
My Rule of thumb of buying headphones is simple: it sounds good and looks good. OAE-1 isn’t doing the job properly. OAE-2 is.

The biggest problem is that OAE-1 isn’t pleasing at all. Concept is great, Big f up on execution. I remember that when I first heard OAE1, sounding was masked (Even in Hi-Res Tracks) and I can’t adjust them well to the point where I heard them the loudest. I don’t fully believe that the Popular Harman Curve is the way because it is a way of studying acoustics, and yet OAE1 introduces an interesting or potentially great concept, still isn’t sound pleasing for me. OAE-2 fixed that and finally got the deserved fidelity and sounding that I expected from D1 on OAE-1 release. That changes my mind and allows me to reconsider buying OAEs.

Lesson of the day for me: Wait for the improved version of the concept to decide that yourself.
 
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At $40 I got a pair....and am very happy I did. Frankly, they changed my view a bit of the efficacy of headphone measurement.

I listen to music through headphones more than any other source. I have owned multiple Sennheiser 600 series, most of the Beyers, and lots of HiFimen.

I expected to hate the OAE-1, both because of Amir's measurements, and because of my head's measurements (huge, size 8, which many reviewers claimed would be disqualifying). They do have quite a firm clamp, but they fit my head fine and because they do not touch my ears, the clamp, even with glasses, is fine. The left/right channel balance changes a lot, as does the frequency response depending on where they sit on my head. In no case would I call the sound accurate....but.

On much of my music they sound wonderful to me. Yes, they are bass forward, yes, some details are smeared compared to my favorite Open Back Sundara, but they are very musical, romantic, spacious, lovely on many things. Not what I would pick as my only headphones, but quite nice when I want an hour of bliss on less complex or orchestral listening. I'm experimenting with some of the EQ curves posted for them, but am not sure I like them better.

So, what to make of this? Alex Grell is not an idiot, far from it. Recent interviews do not show signs of senility. He knows how to design "accurate" headphones and designed something different here. What does accurate actually mean for headphones? The "target" curve in the 1st post (I understand) is based on Harman Preference tests, so is not necessarily accurate either, right? Unlike Amp/Dac/ or even in room response speaker measurements, it measures how closely headphones align with preferences not reality. Am I mistaken?

Listening to the OAE-1 I am reminded of Malcom Gladwell's comparison of the spaghetti sauce vs. ketchup markets. Americans agree that while ketchup can be spelled 2 ways, it should taste one way. The ketchup "Harman" target is strongly agreed on. Markets however, have determined there is not one "best" spaghetti sauce target. I like Rao's pepper/mushroom, someone else will prefer spicy marinara.

Perhaps Grell is the "Rao's" of headphone design who decided to make a new flavor. However, market response to the OAE-1, the discounted $40 price suggests, means headphones are like ketchup after all?

Perhaps with headphones, perfect marinara can be transformed to pepper/mushroom (if you really want that) through DSP EQ curves, but I think more than that is happening here. Forward mounted drivers firing at the entire pinna may impact more than EQ. I do not know, but I do like mine.
I bought mine in Nov 2024 (a lot more than $40…). Are they my preferred headphones? …No. But I like them too, for what they are—different, and certainly not unlistenable for me. Though EQ helps. :)
 
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Some preliminary results from quick measurements of OAE1 (signature) and OAE2.
Keep in mind that these are just one sitting one side results + 1/12 smoothing, done on a clone KB501X pinna and 711 coupler.
On rig measurements and my on head impressions match more or less. OAE 2 is definitely more "normal" sounding headphone
oae1vsoae2.png
 
It’s almost ironic—the AR5000 sounds exactly like what I imagined and wanted the OAE2 to sound like. I tuned both to the Harman target. While the AR5000 has a wide soundstage and sounds very detailed, open, and dynamic, the Grell is the exact opposite. On top of that, I find the Grell quite uncomfortable

PXL_20260605_131418780~2.jpg
 
I don't often agree, but I do in this case; these just aren't good.

I will say that I wasn't glad to have drop shut down, though. Drop brought us a ton of unique and well priced products such as the 6xx. They'd declined over the years, but I'm sorry to see them fold.
 
I don't often agree, but I do in this case; these just aren't good.

I will say that I wasn't glad to have drop shut down, though. Drop brought us a ton of unique and well priced products such as the 6xx. They'd declined over the years, but I'm sorry to see them fold.
Drop reminiscing: Remember when drop sold tons of other stuff? I got my first mechanical watch on Drop. Routinely browsed their catalog to brainstorm various things. Truly a bummer they're gone.
 
Drop reminiscing: Remember when drop sold tons of other stuff? I got my first mechanical watch on Drop. Routinely browsed their catalog to brainstorm various things. Truly a bummer they're gone.
The big fat meat of Massdrop is in Mechanical Keyboard scene...You can't hate e-sports bs enough...
 
Here is my OAE2 measured (on a KB501X) compared to Harman:

OAE2-Measurements.jpg

I tried with some glasses to slightly break the seal and in a few different positions - overall it does a nice job.

That large dip between 8K-10K is not there on my head - though I do hear that extra treble around 11K.
 
That large dip between 8K-10K is not there on my head - though I do hear that extra treble around 11K.
Same here with 8-10k - not so sure about 11.
Additionally I hear small two peaks as my measurements show around 3,5khz and 4,5khz - but it's minor.
Overall it's smooth and I can listen them without EQ without irritation.
 
Spent a few hours with the OAE2. It is the most recording-dependent headphone I have encountered.

On well-recorded (and well-mixed) symphony, live and acoustic material, the soundstage is wide and natural with neutral and precise imaging, vivid dynamics, and no in-head localization effect. In this scenario, it sounds more natural than HD800s and HD490Pro to me.

On heavily processed mixes with synthetic reverb and artificial layering (e.g. Yuki Kajiura's music), vocals recede and everything bleeds into a distant, muddy wall. Imagine stepping out to the restroom at a bar and hearing the band play from the hallway.

Your mileage will vary entirely with your music library.

View attachment 534948View attachment 534949
Sounds like it's just a good headphone then. Speakers will go through the same thing. Recording quality will be very obvious on good, transparent speakers. This is a good thing for a headphone to have in my book!
 
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