Originally Posted by catspaw
When I use the Asgard connected directly from my laptop, I can hear a strange tizz that gets louder when I move the mice, scroll, and similar. It goes away If I use the Laptop on battery alone.
I was wondering If I use optical Modi if that would go away :D.
Originally Posted by DaemonSire
Yes it probably would. That is one of the main reasons to go with an external DAC - eliminates the noise caused by the all electronics inside the laptop. Plus, the DACs in laptops are typically fairly poor quality, so you will get a bump in quality from that as well and get rid of the noise in the process. Win win :)
Optical vs USB would be up to you...both should fix the problem.
Just wanted to add my 2 cents. Yes to the first quote, kinda yes to the 2nd. Now please don't take what I say as definitive, but literally every USB DAC (stand alone DAC/amp and USB headphones) I have used/owned over the years does the exact same thing; Through any analogue out, tiny tizzy clicking electronic sound that occurs when I use the mouse in any way, or the hard disk spooling may cause it, even typing can cause that noise. Even connecting the USB DAC to a dedicated powered hub by itself does not cure the problem. Keep in mind though that the USB DACs I have used were all USB 1.1 (and USB powered), so possibly USB 2.0 will alleviate that problem. Possibly the awesome quality components used in the Modi will prevent this from occurring.
Also take note that not all computer systems will cause the problem to occur; My iMac has 100% black noise (both built-in audio and USB DAC), but virtually every PC system I have built for myself and friends/family over the years has in one way or another, electrical noise interference through the USB to analogue. YMMV.
I will confirm 100% that the optical option is the best way to go. You will never hear noise or interference as it is just light and not an electrical current. Not to mention the Modi optical has it's own external power adaptor so there will be no possible way that you will get any computer related interference. The downside is that it makes the unit not as portable.
Edited by Bansaku - 4/24/14 at 5:41pm