Quote:
Originally Posted by PeterCraig 
Firmware #4 showed improvement in detail, separation, and tighter bass which all point towards less jitter and a more bit-perfect feed. BUT I also experienced more ear fatigue and high frequencies were harsh at higher volumes. Less jitter, more ear fatigue?!? These things didn’t add up for me.
Peter, thank you for the feedback with the issue resolved. I had the same impressions about firmware #4: everything sounds better than at firmware #3 except for harsh highs resulted in ear fatigue.
In my case, the harsh emphasized highs were completely turned into detailed, delicate, clear and distinctive highs when changed foobar 2K software player with Cplay player which was advised by turokrocks. Moreover, the Cplay not only resolved the highs issue and highlighted all improvements and advantages of the firmware #4, it also lifted up the whole sound picture on a higher stage, making it more clear and natural.
So, in addition to the "grounding" method of resolving the problem, I'd suggest to try also the Cplay if you are using foobar as a software player in you setup.
Despite its wonderful sound, Cplay is not very convenient for navigation and has poor functionality as compared to foobar. Besides, I could not make it to work with VIA ASIO driver, I admit I should dig it more for it. Now I am trying another free SW player called "Album player" or "Aplay". It has much more extended functionality and the same clean sound as Cplay or even better, I've not decided yet.
In the internet, the two SW players called "Album player" can be found: one "album player" is commercial (http://www.albumplayer.com/download.htm) - this one is not I am talking about. And the other "album player" is free (developed by a russian programmer) - that's the very Aplayer I am using (http://albumplayer.ru/). Unfortunately, the interface is in Russian language but the developer mentioned he had prepared an English version of the player as well, I just need some time to find appropriate link.
The player does not require installation procedure, it is started right from the downloaded folder by clicking exe-file.
Anyway, the firmware #4 showed better sound compared to #3 if cooked correctly ;)
I wish you a happy New Year and lot of good music to enjoy!
UPD: Ok, as to English version of the Aplayer, the interface language can be set to English by the following operation: in the downloaded folder "APlayer" find the file "aplayer.ini', open it in the notepad and then change the line "English=0" to the "English=1". Then save the file. That's it. Nevertheless, there is a link to English version of the player including readme in English. I'll provide the link once I've found it. The player is really worth try it.
Edited by Allek - 12/31/12 at 3:34am