Rockbox General > Rockbox General Discussion
Line out for Sansa E200?
PolloLoco:
I have a Sansa E280 that I promptly rockboxed using the current build. I use it in a Griffin Power Dock which features a line out - to a mini amp and headphones. If I boot the current Sansa firmware, modifying the volume has no effect on the line out - which is what I would expect. My mini amp makes the player sound great.
However, if I use my rockbox setup - the volume varies as I move the wheel. The sound quality seems to suffer as well - though that might be my imagination.
Does rockbox disable true line output from the Sansa E200? Or do I have to enable it somehow?
Thanks.
saratoga:
I skimmed the code and the datasheet for the DAC a while back, but couldn't see any obvious reason why this should be happening. If I get a chance I'll check again later.
PolloLoco:
Thanks for the reply - and good luck with the research.
Since posting, I found a very long thread on the Anything But Ipod forums, and saw that someone was able to fix the issue by recompiling Rockbox with a modified dac. He reported little change in audio quality, but less noise than through the headphone jack.
That's significant to me, since I believe my portable amp is magnifying the noise. I'm hoping there's a build out that's already included the fix - because I don't yet have the experience to recompile Rockbox on my own.
Here's the reference thread from ABI:
http://www.anythingbutipod.com/forum/showthread.php?t=3387&highlight=line
The post highlighting this issue in Rockbox is number 73.
saratoga:
--- Quote from: PolloLoco on April 21, 2008, 01:15:48 PM ---
That's significant to me, since I believe my portable amp is magnifying the noise. I'm hoping there's a build out that's already included the fix - because I don't yet have the experience to recompile Rockbox on my own.
Here's the reference thread from ABI:
http://www.anythingbutipod.com/forum/showthread.php?t=3387&highlight=line
The post highlighting this issue in Rockbox is number 73.
--- End quote ---
He says the line out is disabled in rockbox, which is obviously false if you're able to use it, so I don't know what hes talking about.
PolloLoco:
--- Quote from: saratoga on April 21, 2008, 07:34:02 PM ---He says the line out is disabled in rockbox, which is obviously false if you're able to use it, so I don't know what hes talking about.
--- End quote ---
You are, of course correct. I wonder if he misworded it when he described the line out as disabled. I can confirm that the output is not line level as compared to the official firmware.
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