I do not think this this will help, but I heard that AI3A's built prior to moving to the Swiss made attenuators had more of a problem with the noise you indicate. I heard in the beginning of the stepped attenuator introduction there were problems like you discribe. If you have the older attenuators you may be out of luck. This may be a blanket statement that may not apply to all AI3A's so don't take my word for it.
The spray you use helps, but it is only a temporary solution. I think to get new attenuators it's about $250. I read somewhere it is a easy change, but is only offered at Audible Illusions.
call AI and speak to Art... see if he can help.
The spray you use helps, but it is only a temporary solution. I think to get new attenuators it's about $250. I read somewhere it is a easy change, but is only offered at Audible Illusions.
call AI and speak to Art... see if he can help.