Originally Posted by ratinox
Of course, the whole process of converting bits into sound waves is
"heavy DSP" so I can't deny the technicality of your statement. Nevertheless, I maintain that the changes from 1.2.2 through 1.2.7 excluding 1.2.3b are subtle, not "significant" as you and others have described. You see, the problem with the claims of significant differences is that you're failing to tell us what your benchmark for "significant" is. When I put 1.2.2, 1.2.3b, 1.2.5 and 1.2.6 side by side as best I could I figured (based on fiddling with the EQ settings) the differences were less than +/- 3dB in the various frequency ranges with the most variance in 1.2.3b. Given that amplifiers like the Centrance HiFi-M8 and JDS C5 have bass and/or treble boost of +3dB to +6dB I call anything less than +3dB "subtle", anything from +3dB to +6dB "noticeable" and possibly "annoying" under certain circumstances. Get past +6dB and then we can talk about just how significant the changes really are.
I would call a change of 1db significant, but I'm not sure how noticeable that would be. A 3db change would definitely be noticeable. But isn't the whole point of a "reference" player to have a flat frequency response with minimal colorations?
I wouldn't use "significant" or "noticeable" to describe the bass boost of 1.2.3b. I would call that "ridiculous." I would probably use the same word to describe the FiiO X3's mid-bass bump as well.
To my ears, the DX50's sound in general is pleasing, but artificial. Its sound reminds me of those early DSP receivers that had preprommed settings like "jazz club," "arena," "concert hall," "stadium," etc. This is especially noticeable when it comes to the width of the soundstage.
The FiiO X3 sounds more honest to me, but the mid-bass boost makes the player completely unlistenable. My hunch (pure speculation) is that the Wolfson DAC is the cause of the mid-bass bump in the FiiO. The reason it's not a problem with the DX50 is becuase iBasso is using a lot of digital processing to "tame" the midbass.
I just don't buy the "library" explanation by itself. If that were the case, why does no other player have these noticeable changes in sound with firmware updates (with the suspicious exception of iBasso's own DX100)?
Edited by jj69 - 1/2/14 at 9:46pm