Please vote whether or not you want parametric EQ on Fiio X3. Feel free to elaborate in your post.
Why you may want parametric EQ on Fiio X3?
Parametric EQ can nullify peaks or valleys in the frequency response of your headphones, without affecting other frequencies.
Many headphones have undesirable treble peaks that locate between 6000Hz-10,000Hz. If you use X3’s current EQ system to reduce those treble peaks, it will significantly reduce the ENTIRE treble between 2000-20,000 Hz (in other words, it will reduce more treble than you truly want).
http://www.fiio.com.cn/products/index.aspx?ID=100000014895351&MenuID=105026002 (X3’s hardware EQ is highly similar to Fiio’s E17, so see E17’s specification).
As examples of headphones’ treble peaks, please see frequency response of Beyerdynamic DT880, HiFiMAN HE-500 and Sennheiser HD 700 from Innerfidelity:
Now reduce 5 db between 2000-20,000 Hz from the above frequency graphs (as how X3 currently does it), can you nullify those treble peaks WITHOUT affecting other frequencies? The answer is no.
Those who care about parametric EQ, Please chime in. I especially like to hear from people that voted "no", as so far none of those has spoken here.
Side note: The purpose of this poll is to provide feedback to Fiio (it is NOT a demand or vent of frustration). Personally, I think Fiio X3 is an excellent DAP with its latest firmware.
Edited by zzffnn - 8/18/13 at 2:39pm