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**Hifiman HE-400 Impressions and Discussion Thread** - Page 954

post #14296 of 17605

That is very true about 16 vs. 24 bits. Does anyone know -- if I'm using WASAPI and set it at 24 bits in Foobar, does this mean that the extra 8 zeros are added before EasyQ sees the signal, or after? Meaning, is Easy Q taking me from 16 to 15 bits (or however many), and then the extra 8 are added, or are the extra 8 added first, so EasyQ takes me from 24 to 23? 

I'm getting pretty extreme with digital volume now that I have the Emotiva Mini-x, though interestingly, my EQ has gotten a lot simpler with this amp vs my old Little Dot. 

Also, listening impression on the Emotiva will be coming soon once I get the parts for my speaker taps adapter tomorrow. Then I can use my resistors. Right now, I'm just listening with a super ghetto adapter I made by mutilating a 3.5mm extension cable from Radioshack. Hopefully, the resistors will reduce my use of digital volume control...


Edited by manbear - 11/11/13 at 2:47pm
post #14297 of 17605

Out of interest what do you mean by "getting extreme with digital volume"? :smile:

post #14298 of 17605
Quote:
Originally Posted by nicholars View Post
 

Out of interest what do you mean by "getting extreme with digital volume"? :smile:


Setting it to -20 dB at times. Maybe extreme is an exaggeration for dramatic effect, but I never went that low with my old amp. However, I don't always have it this low. Depends on the loudness of the song. I have it at 0 for some songs. I try to keep the volume knob on the Emotiva above 9 o'clock, usually around 10 o'clock. There is a slight noise floor that increases with the volume knob, but I want stay above the channel imbalance region of the knob. 

My inline resistors should help with this once I get them hooked up, but I'm also trying to learn how to make a voltage divider network so I can see if that works any better. 

post #14299 of 17605
Quote:
Originally Posted by nicholars View Post
 

Yeh thats why I said that you can set the bitrate on windows audio control to 24bit but leave the media player the same. That is the bits though not the sampling rate in khz - eg. playing 44100khz file at 192000khz in your media player.... With the volume.. If you are bypassing it straight to your DAC with WASAPI exclusive it should not affect that anyway. This is off topic so lets not discuss it any further!

 

According to one of the experts in another video in that youtube channel (can't seem to find which video it is in now) said that re-sampling 44khz to 192khz sounds better also, this is due to being able to move the noise up to higher frequencies so you can't hear them. They mentioned how a lot of SACD's that were just up-converts from CD to DSD on a SACD sounded better for this reason. Maybe this is crap and maybe it doesn't do the same on a PC, but since its sounding good to me now, think I won't mess with it.

 

 

Quote:
Originally Posted by manbear View Post

 

That is very true about 16 vs. 24 bits. Does anyone know -- if I'm using WASAPI and set it at 24 bits in Foobar, does this mean that the extra 8 zeros are added before EasyQ sees the signal, or after? Meaning, is Easy Q taking me from 16 to 15 bits (or however many), and then the extra 8 are added, or are the extra 8 added first, so EasyQ takes me from 24 to 23? 

 

I think if you leave everything at 16 bit on the computer side, then the software equalizing process will result in a drop in bit rate because it is always limited to 16 bit on its output side even if its doing its maths at 24 bit internally. I think its better to set it to 24 bit in foobar before the eq, or as a plug in, it will pass the data back to foobar as 16 bit if it is set to 16 in foobar producing data loss.


Edited by mlxx - 11/11/13 at 5:13pm
post #14300 of 17605
Quote:
Originally Posted by mlxx View Post
 

I think if you leave everything at 16 bit on the computer side, then the software equalizing process will result in a drop in bit rate because it is always limited to 16bit on its output side even if its doing its maths at 24bit internally. So I think its needs to be set to 24 in foobar before the eq.


Why is it limited to 16 bits on the output side? I have a 24 bit DAC and I set the WASAPI output to 24 bits.

post #14301 of 17605
Quote:
Originally Posted by manbear View Post
 


Why is it limited to 16 bits on the output side? I have a 24 bit DAC and I set the WASAPI output to 24 bits.

 

If you set foobar to 16 bit, EasyQ is a plug in to foobar so it will pass the data back in 16 bit to foobar. Foobar will then pass the data with data loss to WASAPI. Its been a long time since I used foobar but if by setting WASAPI to 24 bit that means that foobar is also set to 24 bit, then that is OK.

post #14302 of 17605

.... edited... Off topic etc...


Edited by nicholars - 11/12/13 at 9:03am
post #14303 of 17605

I am not entirely sure if there is a real benefit or not, it sparked my interest when I saw those videos last week. Lots of CD players and DACs do upsampling. By upsampling they insert zero valued samples between original samples (all the original information is still there) to produce 192kHz. They operate more optimally at those frequencies, the DAC is better able to use filters to move the noise to higher frequencies so you don't hear it. I have been testing 24/44kHz with 24/192kHz for the past hour, although its very hard to detect, I think the 192kHz does sound better for my system.

 

For those interested,
http://www.soundonsound.com/sos/nov12/articles/qanda-1112-4.htm
http://www.pstracks.com/bitsandbytes/ham-fisted-upsampling/ ("What is upsampling?" section)

post #14304 of 17605

Wow, the difference between velour and pleather pads is actually night and day sonically however I find the velour pads quite uncomfortable (less plush) and itchy. Is there anyway to solve this issue? 

post #14305 of 17605
Quote:
Originally Posted by Firminator View Post
 

Wow, the difference between velour and pleather pads is actually night and day sonically however I find the velour pads quite uncomfortable (less plush) and itchy. Is there anyway to solve this issue? 


Take out the plastic mounting rings and wash them. I actually put mine in the washing machine and then the dryer, but that was probably not the best idea. They got a bunch of lint stuck to them. The better way to do it is to hand wash with a bucket of soapy water. 

post #14306 of 17605
Quote:
Originally Posted by Firminator View Post
 

Wow, the difference between velour and pleather pads is actually night and day sonically however I find the velour pads quite uncomfortable (less plush) and itchy. Is there anyway to solve this issue? 


Warm, soapy water (not dish soap but maybe a drop of laundry detergent). Squish them around and let them sit for awhile, then air-dry. Repeating the process should help soften them a tad more. I did not remove the plastic rings when I did this. It seems to help.

post #14307 of 17605

hey HE400/headphone experts

 

i'm getting a weird static on heavy bass notes, i started noticing a couple weeks ago.  it sounds very much like digital static, but i can only hear it on my HE400's, none of my other cans or any of my hi-fi zones.  changing cables/usb ports etc on the DAC/amp did nothing.  so it seems to only happen with my 400's, but its very, very digital in sound and only happens on lower bass, and i can only hear it when it's otherwise quiet (bass drops).  it's really bugging me, any suggestions?  is there something to check for this in the cans themselves (although i can't believe that because of how digital it sounds)

post #14308 of 17605
Quote:
Originally Posted by ferday View Post

hey HE400/headphone experts

i'm getting a weird static on heavy bass notes, i started noticing a couple weeks ago.  it sounds very much like digital static, but i can only hear it on my HE400's, none of my other cans or any of my hi-fi zones.  changing cables/usb ports etc on the DAC/amp did nothing.  so it seems to only happen with my 400's, but its very, very digital in sound and only happens on lower bass, and i can only hear it when it's otherwise quiet (bass drops).  it's really bugging me, any suggestions?  is there something to check for this in the cans themselves (although i can't believe that because of how digital it sounds)
Do u still have the original grills on with the dustscreen? And also the original pads?
As With the jerggrill mod it can happen dust getting into/onto the drivers... U then have to blow them clean..very carefully...
post #14309 of 17605

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

 

 

 

post #14310 of 17605
Quote:
Originally Posted by ferday View Post
 

hey HE400/headphone experts

 

i'm getting a weird static on heavy bass notes, i started noticing a couple weeks ago.  it sounds very much like digital static, but i can only hear it on my HE400's, none of my other cans or any of my hi-fi zones.  changing cables/usb ports etc on the DAC/amp did nothing.  so it seems to only happen with my 400's, but its very, very digital in sound and only happens on lower bass, and i can only hear it when it's otherwise quiet (bass drops).  it's really bugging me, any suggestions?  is there something to check for this in the cans themselves (although i can't believe that because of how digital it sounds)

 

Maybe you have your EQ causing distortion on the bass?

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