New Posts  All Forums:Forum Nav:

RockBox For HiFiman HM601 and for HM801 - Page 13

post #181 of 327
2/6/12 at 11:12am

Ah, and 2 GB size limit is for the FAT. Fat 32 file size limit is 4 GB.

Reply
post #182 of 327
2/6/12 at 11:21am

We had a wonderfull meeting in Moscow with users of "russian head-fi" (player.ru) this saturday. There we had all kinds of sourses, headphones and earphones. For example we had C4 Pro's (stock and modded ones), HM-801s (with ST2 and Game amp), a wonderful and very rare modification of Cowon X5L and Iriver 140 called Alexmod and other sourses. And the general conclusion was that HM-801 with Game amp and Alexmod are the best monoblock DAPs. Though we havent yet had a chance to listen to DX100.

 

So yes, HM-801 really benefits from Game amp. It sounds significantly more detailed across the spectrum.
 

Quote:
Originally Posted by ABRockWell View Post

Hey Daze I see in your sig that you have the GAME amp for the 801, mine's arriving today. How do you like it compared to the two stock modules that the 801 comes with?



 


Edited by HungryDaze - 2/6/12 at 11:24am
Reply
post #183 of 327
2/6/12 at 11:24am

     Quote:

Originally Posted by turokrocks View Post

Ah, and 2 GB size limit is for the FAT. Fat 32 file size limit is 4 GB.


That one I do remember.
 

One thing that I've noticed is that when I transferred over FLAC files that I created using XLD on my MBP and then mounted the sd card on my windows 7 laptop I see a whole bunch of duplicate files of my FLACs beginning with ._ These same files also appear in in the SD Card Menu on the 801. I have ended up deleting these ._ files on the windows 7 laptop I have so they do not clutter my SD card menu on the 801 as that's how I'm accessing my music.

 

Also note these ._ files are only visible if you have 'show hidden files and folders' enabled in Windows, but are not visible in OS X Lion. They are visible regardless on the 801 unless deleted in Windows.

 


Edited by ABRockWell - 2/6/12 at 11:33am
Reply
post #184 of 327
2/6/12 at 11:31am


Awesome! I can't wait to get home and try the GAME. I can't imagine the 801 sounding any better as is. I must admit I also have not listened to the DX100 but I am intrigued by it. By any chance, have you tried out 24/96 files on your 801? I have read reports of people saying they hear hiss during playback of some files.
 

Quote:
Originally Posted by HungryDaze View Post

We had a wonderfull meeting in Moscow with users of "russian head-fi" (player.ru) this saturday. There we had all kinds of sourses, headphones and earphones. For example we had C4 Pro's (stock and modded ones), HM-801s (with ST2 and Game amp), a wonderful and very rare modification of Cowon X5L and Iriver 140 called Alexmod and other sourses. And the general conclusion was that HM-801 with Game amp and Alexmod are the best monoblock DAPs. Though we havent yet had a chance to listen to DX100.

 

So yes, HM-801 really benefits from Game amp. It sounds significantly more detailed across the spectrum.
 



 



 

Reply
post #185 of 327
2/6/12 at 11:37am

With Game amp I don't hear any hiss, and I have no desire to check this issue with other amps. Though I haven't listened to 24 files much.

Quote:
Originally Posted by ABRockWell View Post


Awesome! I can't wait to get home and try the GAME. I can't imagine the 801 sounding any better as is. I must admit I also have not listened to the DX100 but I am intrigued by it. By any chance, have you tried out 24/96 files on your 801? I have read reports of people saying they hear hiss during playback of some files.



 


Edited by HungryDaze - 2/6/12 at 11:48am
Reply
post #186 of 327
2/6/12 at 11:42am
Quote:
Originally Posted by HungryDaze View Post

With Game amp I don't hear any hiss, and I don't have desire to check this issue with other amps. Though I haven't listened to 24 files much.



 



Thanks Daze. I asked because I was thinking about purchasing some from HDtracks, but like I said some people have reported hearing a loud hiss from 24/96 files. I'll probably try some this evening and hope for the best. I've never tried any 24/96 FLAC sonds or any hi-res tracks for that matter.

 

 

Reply
post #187 of 327
2/6/12 at 12:29pm
I have reported hiss problems with some 24/96 flac files. This is unrelated to hardware and amp boards but is a problem in the HM-801's flac decoder. I have uploaded several of these problem files to Fangs technicians and Fang has reported back to me that there is indeed an incompatility issue. He has not gone into details with what the issue is or wether it can be fixed with a new firmware. Downsampling the files to 24/48 gets rid of the hiss.

And with regards to the difference between FAT and FAT32 and file size the story is sector size (the smallest addressable unit on the disc device). Under FAT there was a fixed number af sectors so as deviced got bigger the sectors got bigger so even a 1 byte file would take up a full sector which could be 32 og 64 kb. This problem was really only relevant with a lot of small files as opposed to many large ones. In FAT32 the standard sector size (I think) is 2 kb. Also the max filesize increased under FAT32. NTFS changed all this.
Edited by nc8000 - 2/6/12 at 12:30pm
Reply
post #188 of 327
2/9/12 at 5:01pm
The only reason I sold my 602 was the lack of Korean support.

Now I am starting to think I might buy this player again. I really do like rockbox.
Reply
post #189 of 327
2/10/12 at 12:46am
Quote:
Originally Posted by nc8000 View Post

I have reported hiss problems with some 24/96 flac files. This is unrelated to hardware and amp boards but is a problem in the HM-801's flac decoder. I have uploaded several of these problem files to Fangs technicians and Fang has reported back to me that there is indeed an incompatility issue. He has not gone into details with what the issue is or wether it can be fixed with a new firmware. Downsampling the files to 24/48 gets rid of the hiss.
And with regards to the difference between FAT and FAT32 and file size the story is sector size (the smallest addressable unit on the disc device). Under FAT there was a fixed number af sectors so as deviced got bigger the sectors got bigger so even a 1 byte file would take up a full sector which could be 32 og 64 kb. This problem was really only relevant with a lot of small files as opposed to many large ones. In FAT32 the standard sector size (I think) is 2 kb. Also the max filesize increased under FAT32. NTFS changed all this.


Any idea what happens if you convert those file to Wav at 24/96?

 

Reply
post #190 of 327
2/10/12 at 2:31am
Have not tried that but can do
Reply
post #191 of 327
2/10/12 at 7:59am
Quote:
Originally Posted by nc8000 View Post

Have not tried that but can do


I'm keen to hear what your results are.


Edited by irvin59 - 2/10/12 at 9:42am
Reply
post #192 of 327
2/10/12 at 12:39pm
Quote:
Originally Posted by irvin59 View Post



I'm keen to hear what your results are.



I've had similar issues on my Studio V with certain tracks giving me clipping. Once I expanded those files to WAV the clipping was gone. Not sure if the same concept would apply to the Hifiman though...

Reply
post #193 of 327
2/17/12 at 1:21am

I have now tried this. I converted the 24/96 flac file to 24/97 wav, 24/48 flac and 24/48 wav. The 24/96 flac plays but with the strong hiss. The 24/48 flac plays with no hiss. Neither wav file will play at all but rather both resets the player when it tries to play them. This was with firmware 0.20. I then tried to upgrade to the latest firmware 0.21 but the results were the same. So the conclusion seems to be that there are problems decoding some 24/96 flac files (confirmed by Fang), that downsampling to 24/48 does not have this problem and that the player is unable to play hires wav files.


 

Btw. the same 24/96 wav file plays without any problem on the Colorfly C4 however the C4 does not play hires flac.

 

Quote:
Originally Posted by irvin59 View Post


Any idea what happens if you convert those file to Wav at 24/96?

 



 


Edited by nc8000 - 2/17/12 at 1:32am
Reply
post #194 of 327
2/17/12 at 1:36am
anyone know why i cant access my hm-601's internal drive after installing rockbox?
Reply
post #195 of 327
2/17/12 at 2:08am
Quote:
Originally Posted by Evilcalyptic View Post

anyone know why i cant access my hm-601's internal drive after installing rockbox?


It's well-known bug of current version of RB - internal disk is not available ( and Hold button is inactive).  I hope it will be fixed in future by RB creator.

 

Reply
New Posts  All Forums:Forum Nav:
  Return Home