SONY NWZ-A10 Series
Apr 15, 2015 at 10:05 PM Post #4,186 of 7,541
  I need a lesson on S/N ratio.
I'm not interested in the amp section of A10. (I only listen to it with IEM and on the go, so hiss and S/N do not have to be stellar.)
If I didn't understand wrong, what you'r saying, @ClieOS is that when I connect A10 to my E12 via LOD, if I chose low gain, then there would be less hiss?? (Yes, when I switch to low gain I do not hear the hiss) Does that mean that I'm better off with low gain and I get a better S/N ratio? 
I want to get the best of A10 SQ wise. So far, A10 > LOD > E12 low gain seems to work OK.  
Now, do I have a setup that is in the league of those hifi bricks as @castleofargh put it or not? 
triportsad.gif

 
For that to happen, we have to assume that the SNR on the A10's line-out is good enough that, after E12's amplification (*which don't forget E12 has its own SNR as well), the final SNR will be better then A10's headphone-out. Usually when a DAP's line-out is high enough (which means the DAP is what we usually refer as a 'clean' source), that will be true. But given A10's line-out isn't actually that high, it can go both ways depends on the setup.
 
Apr 15, 2015 at 11:49 PM Post #4,187 of 7,541
as Promised LOL chronometer test Fiio x3 1st generation latest Firmware vs A17 with latest firmware (1.10)... how much time they take to create the Library from a 128GB microSD class 10 UHS I Sandisk... filled to the Max (54MB free), also both units had their internal memories filled to the max too
 
FIIO X3

Walkman A17

 
Apr 16, 2015 at 12:35 AM Post #4,189 of 7,541
The main factor in building the library is the number of files. With max 128gb sandisk in my A15 it took less than a minute to create the library (less than 3000 files)
 
Apr 16, 2015 at 9:28 AM Post #4,191 of 7,541
what's your point?
we have explained many times now that hearing the noises depends on how loud you listen to music, what kind of music, and how efficient your IEM is. there is nothing wrong with not getting a hiss. I can't hear it on more than half of my IEMs. but I do with others.
 
if you're sad that we're telling bad things about the A10, just know that all sources have a background noise. what changes is merely how loud it is.
 
Apr 16, 2015 at 12:22 PM Post #4,194 of 7,541
discovered something cool with my walkman
 
due to the lack of space in the internal memory (I had free 304MB and the album is 380MB) splitted it between the internal (303MB) and the rest in the sd card (77MB). was expecting to see the album duplicated in the album listing f.e one with 10 songs and the other with the remaining 4 coming from the SD card.
 
Nope, it combines into a single album using both sources (what It doesn't combine is playlists)
 
Apr 16, 2015 at 12:26 PM Post #4,195 of 7,541
The main factor in building the library is the number of files. With max 128gb sandisk in my A15 it took less than a minute to create the library (less than 3000 files)


I have indeed internal + SD like 9, 170 flac files mainly 16/44.1 and a bunch of albums are 24-bit, that is like 543 albums total
 
Apr 16, 2015 at 12:29 PM Post #4,196 of 7,541
  as Promised LOL chronometer test Fiio x3 1st generation latest Firmware vs A17 with latest firmware (1.10)... how much time they take to create the Library from a 128GB microSD class 10 UHS I Sandisk... filled to the Max (54MB free), also both units had their internal memories filled to the max too
 
FIIO X3

Walkman A17


Cosidering this, the sony has a bigger internal memory (64GB) vs the fiio x3 (8GB), so the sony is faster at scanning the same 128GB microSD card. SOFTWARE OPTIMIZATION Techniques
 
Apr 16, 2015 at 3:02 PM Post #4,197 of 7,541
Take Note the first time it creates the library took 7 minutes 10s 19ms, once it's created... if you disconnect from pc is super fast less than 10s. I did format the Walkman memories, SD and internal. Did this because I wanted to see if sony firmware update removes space from the internal memory every time a firmware is patched... (fiio x3 does this every time you upgrade firmware and format the memory of fiio it displays less space). Sony still preserves the 56.8GB it came with
 
Apr 16, 2015 at 3:20 PM Post #4,198 of 7,541
Talking more about memory space thr "64GB" of the sony is wayless than the standard formatted 64GB usb stick the sony once formatted is 56.8GB that's 88.75% usable space contrasted that most usb sticks leave you 93% of usable space so the OS is stealing 4.25% so the OS is quite heavy at 2.72GB
 
Why sony HAS NOT INCLUDED A SEPARATE WRITABLE ROM CHIP TO INCLUDE THE OS and leave alone the internal memory... the only Walkman I knew it displayed correct capacity at 93% was the x series 32GB 29.7GB
 

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