[problemanema]

hi guys, i could use some help. I get the humming without any source connected the to the M-stage so I do believe that it is an issue with the amp. i dont really want to send it to china and wait 2 months. is there anything i can do to fix the problem? thanks guys

 

[problemanema]

well i emailed to people in china and this is what they emailed me back:
 
Quote:

[size=10pt]The problem is because of the working voltage of the item less than 220V.
Could you please get a voltage regulator to make sure the service voltage more than 220V and then test the item again.[/size]
 

 
does anybody understand this? and could this be problem? thanks