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Hifiman HE6se Review (Headphone)

So many years. So many different headphones. Cheap ones, expensive, and very expensive.
And after so many years, I'm back with the HE6SE...
Overall, the best headphones I've ever owned...

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Holy Shmoly, what you done to that grill! ;) Do they keep rotating when you stop! :p
 
Sold mine because got bored, then bought Edition XS which broke down. Now kinda miss HE6SE, it's hard to fault, maybe if someone wants really vocal focused headphone HE6Se ain't it.
 
Sold mine because got bored, then bought Edition XS which broke down. Now kinda miss HE6SE, it's hard to fault, maybe if someone wants really vocal focused headphone HE6Se ain't it.
Even when EQ'd though? Should be ok after EQ right?
 
So many years. So many different headphones. Cheap ones, expensive, and very expensive.
And after so many years, I'm back with the HE6SE...
Overall, the best headphones I've ever owned...
How do you compare the he6se with the other Hifiman’s you owned?
I find the he1000 stealth superior in terms of imaging (when EQ’ed to same target)
 
How do you compare the he6se with the other Hifiman’s you owned?
I find the he1000 stealth superior in terms of imaging (when EQ’ed to same target)
Edition XS sounds bigger and ethreal, HE6se is more smooth and has weight to the sound but smaller scale.
Can't say one is better to another, comes to personal preference.
 
How do you compare the he6se with the other Hifiman’s you owned?
I find the he1000 stealth superior in terms of imaging (when EQ’ed to same target)
 
Here are the results of many, many hours testing and comparing. The preset is based on Crin's measurements.

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In my opinion , the result is so good,
that it disillusions me. I would gladly spend €2,000 more, to be able to hear something even better. But I simply don't know of any headphones that would achieve that.

Yes, the Utopia 2022 is more transparent,
but it has one gigantic drawback that is an absolute dealbreaker: the mechanical clipping of the driver. It sets in very early, especially when set according to Hamann Target.
Absolutely unacceptably early.

The He6se, on the other hand, has what feels like unlimited dB reserves. These headphones have the best bass I've ever heard.
Above a certain volume, the slam is so powerful that I can physically feel it (in my neck and jaw).
 
I've been on a weird tube rolling experiment (the benefit of being newly retired) with Schiit Mjolnir 2 and the HE6SE over the last several weeks.

In theory, the MJ2 should have low enough output impedance (1 ohm in high gain, 0.3 ohm in low gain) and enough power (8W into 32 ohms, 5W into 50 ohms). And it can get plenty loud through the XLR output jacks.

But....

After weeks of messing around with the MJ2, I think I've decided that I actually prefer the HE6SE driven directly from the speaker-out jacks of my Luxman L-590AXII.

The Luxman is rated for 30W into 4 ohms / 60 W into 8 ohms, which roughly calculates into 4.8W into 50 ohms, so the power output should be similar to the MJ2. Nonetheless, the speaker-outs sound a bit better, so I don't know if the Luxman is able to push higher current and drive the cans a little better, or it's just got a big honking power supply that helps in some way.

Thoughts?

FWIW, I'm not using the HE6SE adapter box, just driving straight from a stereo banana -> 4 pin XLR adapter cable.

Do I even need a headphone amp?
 
There seems to be a rather big crowd surrounding the HE6 (in all of it’s iterations) that claim ‘moar power = better sound quality’…which is just plain nonsense.
These are the same cats that pair the Hifiman with stereo amps and either end up using maybe 3-5% of it’s juice with little to no volume control…or they simply blow out the transducers.
I think a lot of this boils down to the narrative about the HE6. ‘The hardest to drive headphone on the market’. ‘Needs an absolute powerplant to reach it’s potential’.
…which in all fairness is true if you’re coming from a K371 and an iPod.

Anyhoo the A30 should be more than enough muscle to drive this headphone to perfection, even with equalisation added.
Don’t fall victim to audio nervosa created by folks allergic to measurements.

I have used the HE6SE with both a Schiit Mjolnir 2 and using the speaker outputs of a Luxman L-590AXII integrated amp (rated for 30W into 8 ohms).

On paper, the output is about the same for both into 50 ohms (5W for Schiit, 4.8W for Luxman).

Both can get plenty loud enough.

Nonetheless, I prefer the Luxman speaker outs a bit more.

The idea that that there is little to no volume control doesn't seem to be true in this case, as I have enough play in the volume pot to fine tune things.
 
More or less, yes, but the 6 family is a much bigger load to those amplifiers than speakers are. Having a 81-83mW/dB sensitivity, the Hifimans are akin to speakers, only with 60 ohm of resistance. What this means in practice is that the voltage offered by those speaker amps will be kept the same, but power will be much lower (3-6W), so unless you're talking about professional power amplifiers, the transducers won't explode just be sheer volume: what might happen is they getting damaged from circuit design "flaws" and lack of circuit protection on the outlets, which weren't designed for that high of a load or for headphones (a full blasted pop near your ear from your 50mm headphone driver is not the same as a pop on a 5" > speaker 3m away).

If we were still 10 years back in time, or even a few years behind, power amplifiers would still be a good solution to driving the HE6s if you like to listen to them at impressive levels, with only the aforementioned caveats and higher frequency quirkness due to Class D load dependency. The former is one of the reasons Hifiman sold a "protection" adapter for them back in the day. Today though, you can get a > 2W for little over 200 dollars so no need for going crazy.

I'm running the HE6SE without the adapter box, just raw speaker bananas to XLR, off a Class A integrated speaker amp.

(I already owned this amp to drive speakers, where I do most of my listening, so it's not like I special purpose purchased it)

So far, works well.
 
I'm running the HE6SE without the adapter box, just raw speaker bananas to XLR, off a Class A integrated speaker amp.

(I already owned this amp to drive speakers, where I do most of my listening, so it's not like I special purpose purchased it)

So far, works well.
With Class A and a well design circuit, it should work well. Just make sure you have a proper pre-amplifier before the amplifier.

I usually dissuaded people from using the 6SE with "too good to be true" solutions like the cheap Ayima 07 amps, or their equivalents from Fosi and the competition, because their class D load dependency on 60 ohm (7.5x their projected coupling impedance) meant a substantial change in tuning, making the headphones audibly brighter. I also didn't trust their output protection, although I have used a Fosi myself for some time.

People sometimes went even crazier, getting professional Crown rack amplifiers to drive the 6SE or the HE6 OGs, only to limit them afterwards by using preamplifiers set to 10-20% on the dial. That they weren't bothered by the abysmal distortion levels, specially when giving them a such undersaturated signal, is a telltale sign that audiophiles hear what they want to hear, and are mostly oblivious to things that really make a tangible difference.

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With Class A and a well design circuit, it should work well. Just make sure you have a proper pre-amplifier before the amplifier.

I usually dissuaded people from using the 6SE with "too good to be true" solutions like the cheap Ayima 07 amps, or their equivalents from Fosi and the competition, because their class D load dependency on 60 ohm (7.5x their projected coupling impedance) meant a substantial change in tuning, making the headphones audibly brighter. I also didn't trust their output protection, although I have used a Fosi myself for some time.

People sometimes went even crazier, getting professional Crown rack amplifiers to drive the 6SE or the HE6 OGs, only to limit them afterwards by using preamplifiers set to 10-20% on the dial. That they weren't bothered by the abysmal distortion levels, specially when giving them a such undersaturated signal, is a telltale sign that audiophiles hear what they want to hear, and are mostly oblivious to things that really make a tangible difference.

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It's an integrated amp.

Luxman L-590AXII.


Its main duty is driving speakers, so I didn't purchase it just for the sake of powering the HE6SE.
 
It's an integrated amp.

Luxman L-590AXII.


Its main duty is driving speakers, so I didn't purchase it just for the sake of powering the HE6SE.
By its specs and Ohms law (P=U²/R), it produces 15.5 volts, which is roughly 4W at the HE6s 60ohm impedance. Plenty enough for them, even with EQ. Also, by its distortion specs it spouts 86db SINAD, which is very respectful.

It also looks gorgeous and has tone controls and V.Us, enjoy :D
 
By its specs and Ohms law (P=U²/R), it produces 15.5 volts, which is roughly 4W at the HE6s 60ohm impedance. Plenty enough for them, even with EQ. Also, by its distortion specs it spouts 86db SINAD, which is very respectful.

It also looks gorgeous and has tone controls and V.Us, enjoy :D

Thanks!

I got 4.8W into 50 ohms running calculations.

The HE6SE (not the OG HE6) is specced at 50 ohms. Is it wrong?
 
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The DX40 Pro is no longer enough for me. Especially when listening to music after smoking weed, I set the gain all the way up to 1.5.

According to the specs, the DX5 II will offer more power, right?
 
The DX40 Pro is no longer enough for me. Especially when listening to music after smoking weed, I set the gain all the way up to 1.5.

According to the specs, the DX5 II will offer more power, right?
Looks like you need DX9
 
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