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**Hifiman HE-400 Impressions and Discussion Thread** - Page 956

post #14326 of 17960

I do believe in brain burn-in too.

post #14327 of 17960
Quote:
Originally Posted by pdrm360 View Post
 

 

Yes, defiantly.

Thanks for the quick reply. As expected , I like the overall tonality. The sound sig is tailored fit to my taste. Thanks to this thread, it helped me a lot in choosing HE400. Happy camper here:gs1000smile:

post #14328 of 17960
Quote:
Originally Posted by pdrm360 View Post

I do believe in brain burn-in too.

Its been the most with the he400 to me. Every other dynamic, has been easy to get used to its signature. The he400, took a while. Had to not listen to any other hp for a few days/ weeks to adjust. Then going back to dynamics, well I'm ruined so to say. Still like the re400 and magnum, but...need more planar!!!
post #14329 of 17960
Quote:
Originally Posted by Guess? View Post
 

Just messing around with my Pamphobeteus sp. Platyomma, decided to share this with you guys

 

 

 

I just noped over and over, that spider is HUGE. (That's coming from somebody living in Australia)

...but I have to say that's the prettiest spider I've ever seen :P

post #14330 of 17960
Quote:
Originally Posted by nehcrow View Post
 

I just noped over and over, that spider is HUGE. (That's coming from somebody living in Australia)

...but I have to say that's the prettiest spider I've ever seen :P

HAhah thank you, coming from someone living in Australia that's a big compliment ;)

 

Quote:
Originally Posted by pdrm360 View Post
 

 

WOW, very interesting videos! 


Thanks, mate =))


Edited by Guess? - 11/13/13 at 12:33am
post #14331 of 17960
Yes I would agree that brain burn in is very important with the HE400... probably more than any other headphones I have owned. Also mods and EQ.... Brain burn, mods, EQ = win
post #14332 of 17960

I've had my Emotiva Mini-X A-100 for a couple days now, so I'm going to share some impressions with the HE-400.

First of all, I had to figure out how to make an adapter. This amp has common ground, so the stock TRS jack of the Hifimans will work with an adapter. This kind of adapter will cause major problems with speaker amps that don't have common ground, so check with someone who knows what they are talking about if you try to make one like this for a different amp. For example, this won't work with a Topping T-amp. 

My first attempt was to chop the female end off a 3.5 mm extension cable from Radioshack that I had laying around. I cut off the outer rubber layer, removed the flimsy foil shield, and stripped the ends of the L+ and R+ wires. The ground wire was bare, so i covered it with some of the outer layer that was left over. As you can see, it's pretty ghetto looking (not helped by that tape I put around it at the junction). However, it worked just fine. My biggest complaint was that the wires were very thin and fragile. 

 


Note that you only need to connect one ground wire to either one of the negative terminals on the amp. L- and R- are connected inside the amp, and would be connected again at the sleeve of the TRS jack, so there is no need to have separate wires for them. 

I put together a more solid adapter last night. I can't solder, so I used a Switchcraft model 1230 TRS female jack. It has screw terminals inside, so I just had to match up the terminals and wrap the wire ends around the screws and tighten them. This is very convenient and puts DIY adapters in the reach of anyone IMO. I used wire that I took from inside a Canare Starquad cable. In retrospect, it would have probably made more sense to order individual strands of wire than to take apart a cable, but whatever. Separating the individual wires means I can see which is which and don't have to do continuity testing with an ohmmeter. The other advantage of this adapter is that it's a 1/4" female, so I can use my 3.5mm to 1/4" adapter with 300 ohm resistors inside. 

 

 

 

The Emotiva is obviously overkill for the HE-400. I'm ok with it. It's cheaper than almost every SS amp I can think of beyond the Magni and O2, which is why I got it. And because my Little Dot MKIII was clipping at high volumes, so I wanted MOAR power. MOOAARR! :evil:

Without the resistors, there was some noise floor. Not enough to ruin the experience for me, at about the level of ambient noise in my house. I could definitely hear it when things were dead silent in my listening room, but with the heating system running, washing machine on in the other room, etc. it was much less noticeable. With the resistors, the noise floor is totally gone on the HE-400. I can't even tell if the amp is on. 

Each time I first used my two adapters, I plugged in my Nuforce IEMs before my HE-400s to make sure there weren't any shorts and that I matched the terminals correctly. Without the resistors, the noise on the IEMs was awful. With the resistors, there was about as much noise on the IEMS as there was with the HE-400 and no resistors. 

Without the resistors, I had digital volume at around -10 to -20 db and the volume knob at 9 or 10 o'clock on the HE-400. With the resistors, I have digital volume at -0 db and the volume knob at 11 o'clock to noon, which is about what I expect from any amp. So the volume knob is very usable. 

On to the sound compared to my Little Dot MKIII. The first thing I noticed was increased definition in the bass. Complex bass lines in electronic music became clearer (like this: http://www.youtube.com/watch?v=CP9r4g4qfbc), and the bass tightened while also gaining impact and snap. Extension was about the same. The sense of visceral texture in the midbass and lower midrange, the crunch and crackle of synths and guitars, improved noticeably. The Little Dot's bass sounded bloated and smeared after listening to the Emotiva. 

Moving up the spectrum, the midrange became cleaner and faster. This amp really highlights the speed of the HE-400 IMO. The treble became a bit less smooth, but not offensive at all. Again, more speed and articulation. The Little Dot seemed to slightly blur the whole frequency spectrum in comparison. The Emotiva increased the size of the soundstage a bit, and increased separation and layering even more. On Daft Punk's RAM, for example, image placement became substantially more 3D. In general, I wouldn't say I'm noticing more details, but they are clearer and easier to pick out, especially sounds like synth layers in the background of mixes. 

I also tried using the Little Dot as a preamp. It mostly sounded like I was still listening to the Little Dot, except there was obviously no clipping. It did however increase the usable range of the volume knob. 


Edited by manbear - 11/13/13 at 11:18am
post #14333 of 17960
Seems like the differences are tube vs SS than emotiva vs SS?... Can you compare the emotiva to a lesser SS amp such as fiio or Xonar STX?
post #14334 of 17960
Seems like the differences are tube vs SS than emotiva vs SS?... Can you compare the emotiva to a lesser SS amp such as fiio or Xonar STX?
post #14335 of 17960

Thanks for the impressions. The Emotiva always interested me because you could use it as an endgame amp, so while you're upgrading cans, you're set with the amp. I'm curious, how much travel is there on the knob? And at what point on the dial is a comfortable volume?

post #14336 of 17960
Quote:
Originally Posted by nicholars View Post

Seems like the differences are tube vs SS than emotiva vs SS?... Can you compare the emotiva to a lesser SS amp such as fiio or Xonar STX?

I don't object to the characterization of tubes vs SS, but I do think the Emotiva is a real step above my other SS amps. I have a JDS labs CMOY and an entry-level Sony receiver from the 90s. My CMOY clips with the HE-400 rather easily. As in at my regular listening volume (~80db). Below clipping, the CMOY has a similar flavor as the Emotiva, but separation, soundstage size, and bass definition, especially tightness in the midbass, are lacking. On the Sony, there is a veil to the sound that's substantially more pronounced than what I heard on the Little Dot. Going between the Sony and the Little Dot, I just thought "eww," though the Sony did have more bass impact. I'd put the CMOY above the Sony, clipping aside. 

Now if I were comparing the Emotiva to something like the Magni or O2, I wouldn't be surprised if the differences were smaller, but I'm only speculating. I haven't heard either. Someone in the Emotiva thread put the Emotiva a small bit above the Magni, but said there wasn't a whole tier of SQ difference between them. I got my Emotiva used for a good price, and it's just much cooler IMO, so I'm fine with that. 

EDIT: Clipping on the CMOY could be because of the batteries? I tested the batteries and they were in the green range of my little battery meter, but they aren't fresh. 


Edited by manbear - 11/13/13 at 11:20am
post #14337 of 17960
Quote:
Originally Posted by beaver316 View Post
 

Thanks for the impressions. The Emotiva always interested me because you could use it as an endgame amp, so while you're upgrading cans, you're set with the amp. I'm curious, how much travel is there on the knob? And at what point on the dial is a comfortable volume?


It depends a lot on the song, but with no digital volume control, around 12 to maybe 2 o'clock for quiet songs is too much for me. Below 9 o'clock is too quiet on most songs. I usually have it around 11. This is with the 300 ohm resistors. 

post #14338 of 17960
I do find the midbass on my HE400 a bit loose at times, although I assumed it was just the headphones as people say that they do not need a good amp... Maybe it is the STX don't know..
post #14339 of 17960
Quote:
Originally Posted by nicholars View Post

I do find the midbass on my HE400 a bit loose at times, although I assumed it was just the headphones as people say that they do not need a good amp... Maybe it is the STX don't know..

On the Little Dot, I EQ'd the midbass down about 4 db relative to the subbass. With the Emotiva, my EQ is totally flat except for the treble peaks. FWIW. 

I don't quite understand the science of how amp power vs. gain affects "adequately driven-ness" vs. loudness, but I was getting about 100mw at 32 ohms and 350mw at ~300 ohms (with the resistors) on my Little Dot, and I don't think it was enough. 

post #14340 of 17960
Another thing is that my STX has a 10ohm impedance and the HE400 are around 40ohms I think.... This would be a damping factor of 1:4.... Although I am not sure how much this can have an effect on planar / ortho.... Usually people say 1:8 or as much as 1:20 with dynamics...
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