[BBEG]

Found the problem!
 
Turns out the issue is actually my 3.5mm to 6.3mm adapter. I thought I was using the Sennheiser 3.5 -> 6.3 adapter but was actually using the Somic adapter that came with my MH-463s. I just found my Sennheiser adapter (the black one) and the sound quality is much better. Found via going in order from Schiit's troubleshooting email (much obliged, Nick!).
 
Just to nix this issue in the future, can someone recommend a replacement cable for the HD 600 that terminates in a 6.3mm plug?

 

[BBEG]

  Is your machine overclocked?

 
Doesn't hurt a thing unless it's a borderline unstable overclock. My particular 2600k is benchmark and gaming stable at 5.1GHz on air, so the piddly 4.3GHz I'm on now is nothing.

 

[RickB]

  Found the problem!
 
Turns out the issue is actually my 3.5mm to 6.3mm adapter. I thought I was using the Sennheiser 3.5 -> 6.3 adapter but was actually using the Somic adapter that came with my MH-463s. I just found my Sennheiser adapter (the black one) and the sound quality is much better. Found via going in order from Schiit's CS email (much obliged, Nick!).
 
Just to nix this issue in the future, can someone recommend a replacement cable for the HD 600 that terminates in a 6.3mm plug?

The HD650 cable has a 6.3mm plug, and is cheaper than the HD600 cable.

 

[BLACKENEDPLAGUE]

  Found the problem!
 
Turns out the issue is actually my 3.5mm to 6.3mm adapter. I thought I was using the Sennheiser 3.5 -> 6.3 adapter but was actually using the Somic adapter that came with my MH-463s. I just found my Sennheiser adapter (the black one) and the sound quality is much better. Found via going in order from Schiit's CS email (much obliged, Nick!).
 
Just to nix this issue in the future, can someone recommend a replacement cable for the HD 600 that terminates in a 6.3mm plug?

 
http://www.amazon.com/Replacement-Cable-SENNHEISER-Headphones-HD650/dp/B0028PGXRE

 

[SymphonicTXN7]

  Found the problem!
 
Turns out the issue is actually my 3.5mm to 6.3mm adapter. I thought I was using the Sennheiser 3.5 -> 6.3 adapter but was actually using the Somic adapter that came with my MH-463s. I just found my Sennheiser adapter (the black one) and the sound quality is much better. Found via going in order from Schiit's CS email (much obliged, Nick!).
 
Just to nix this issue in the future, can someone recommend a replacement cable for the HD 600 that terminates in a 6.3mm plug?

I broke my Sennheiser adapter awhile back. I went through three replacements and could not match the sound that the stock Sennheiser gave. Waited 7 weeks due to them being backordered. 

 

[BBEG]

   
http://www.amazon.com/Replacement-Cable-SENNHEISER-Headphones-HD650/dp/B0028PGXRE

 
While appreciated, I'm looking more at something like this:
 
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=121175517188
 
 
I have no need for a 3m long cable and have been meaning to replace it with a shorter cable anyway. I imagine something like this is of comparable quality to the stock cable, but terminating in a proper 6.3mm plug and being available in the 1.2m length I'd prefer.

 

[65535]

Send me $25, and I'll send you a stock HD650 cable with a Neutrik NP3X Nickel or Black at the length you desire.

 

[madwolfa]

Understood. The files I'm playing are not 24/192 though; I guess I'll be getting a glass fiber cable after all though...

Don't fret, I have a V Gene, the onboard on it doesn't support 24/192 digital output properly. I've tried it with 300$ glass cable too and 2 different DACs.

 

[Nada190]

How do you tell the music is actually being played at 192 and not 96? 

 

[65535]

If the track is a 192kHz sample rate file and you have a sound card that supports 192kHz sample rates and it's set to 192kHz then everything is peachy. If you have a 44.1kHz sample rate file and you have everything else set to 192kHz you are wasting processing power and time. Plus you increase the chance of errors while performing the sample rate conversion. 192kHz sample rates for lower sample rate files is foolish at best.

 

[BBEG]

  Send me $25, and I'll send you a stock HD650 cable with a Neutrik NP3X Nickel or Black at the length you desire.

 
PM me your paypal. And start a marketplace topic if you want feedback rep.

 

[BLACKENEDPLAGUE]

  How do you tell the music is actually being played at 192 and not 96? 

 
You can't unless your dac says so

 

[Tuco1965]

   
You can't unless your dac says so

JRiver MC indicates exactly what sampling rate and bit depth are being fed to connected DACs.

 

[BLACKENEDPLAGUE]

  JRiver MC indicates exactly what sampling rate and bit depth are being fed to connected DACs.

 
But that's all you need isn't it?

 

[Tuco1965]

   
But that's all you need isn't it?

I'm not sure I understand.