You want a low impedance at HF, that's why a small value. The idea is to lower the power supply impedance at frequencies where the regulator has a high impedance.  Any time one uses a high slew rate opamp such as the Lm6172 or even the sensitive AD797, HF decoupling directly on the opamp pins is...

Try out LM6172 for I/V with MUSES01 in LPF and buffer. Solder 0.1uf stacked film caps between pins 4&8 (+&-) of the I/V opamps - try ebay for Siemens stacked film caps, you don't need large capacitance, just something to decouple at HF.     Class a bias could be worth exploring for heavy...

In that case, RMA it, either back to store or ASUS.

Thanks Chewy :)      You should not be getting any noise at all, aside from what Chewy suggested the only other thing I can think of is it may need a firmware update (you will need to connect it to a PC and download firmware from the ASUS product page).

Which input are you using? 

Quote:     Cryogenic treatment of brake discs is something that is supposed to reduce warping.   http://www.metalscience.com/techinfo_ASM.php   How that relates to audio tubes is anyone's guess I suppose - depends on metals and the process itself. No telling if the effects (if...

I reported it to HQ but they have not been able to replicate thus far due to the random nature of the problem.

The DRAM instability may be due to using two separate kits. Likely need to adjust memory controller voltages and relax memory timings to cure that. Quote:    

Quote: Okay, can you fill this out and I will relay it to ASUS HQ:         Power supply: Motherboard: BIOS: CPU: Memory (exact model): Do you overclock? no/yes Graphics: Graphics driver: Soundcard:  Sound driver: Other cards + drivers: Peripherals +...

I am looping this to HQ. Can you please try the following:     Disable "SPDIF Passthrough Device" in the control panel Disable GX     Let me know if that helps. If it does not, then will likely need full config details including all relevant driver and software info.   -Raja

Quote:   I suppose I would echo that some of the audience does not care about accuracy per se, though they are probably chuffed that their latest purchase has some facet of pseudo-science behind it. If they knew that most of what they are paying for circuit wise isn't really special or...

This post be SE pretty much sums up reactions of level-headed by-standers when it comes to audiophilia:   http://www.diyaudio.com/forums/everything-else/37842-one-way-make-expensive-speaker-cables-2.html#post437017

  Quote:   Using the DACs in mono mode can in theory provide better channel separation (SNR, crosstalk etc.).    In multi channel systems, you'd need enough DACs to drive each of the channels. Chances are each is being used in mono mode.  

There are two types of support a vendor can provide its customers. The first is reactive support where customer issues are addressed as they arise. Solely relying on reactive support methods does not pay long-term dividends in sharply contested markets. Online media and search engine...

Quote: Lets hope that does not include more post-test smoothing of the graphs...lol