[linux-audio-user] edirol ua-25 hiss, just on gnu/Linux

[Cesare]

Ruinaudio wrote:

>On Sat, 2005-10-08 at 13:53 +0200, Cesare wrote:
>  
>
>>Something strange is happening to my edirol audio usb interface: when
>>the pc is booting up I can hear an annoying noise coming from the
>>interface (I mean on the outside, not from the jack). The hiss stops
>>when (I believe) the driver is loaded, or the OS has recognized the
>>interface. This also happens on my ibook.
>>
>>On Linux (Suse9.3 x86_64, and Demudi 1.2.1) the noise never stops. It
>>just seems to diminish after a while. I haven't noticed it before I
>>think before I always wear headphones when I decide to work with this
>>interface.
>>
>>Do you have any clue?
>>    
>>
>
>I have the same interface and I also hear the "hiss" though for me it's
>more of a "capacitor hum".  I've only ever used it with linux so I can't
>say if it goes away on any other OS.  The sound does become quite after
>a while (perhaps when the components warm).  IIRC I've heard of the same
>experience from other UA-25 owners, sorry I can't be of more help.  It's
>a pretty easy unit to take apart, if you're very curious you might be
>able to track down exactly what part is humming and contact the edirol
>for information.
>
>-ry
>
>  
>
Yes.I can hear the same kind of  hum you can get when a transformer 
starts resonating.
What is strange is that it stops on windows and on mac, like if the 
linux driver is missing some setting.

c.