Which way is on? Are the tone controls turned way up when you engage the button? If they are turned up, set them to 0 or the flat position. Just a thought.
How long have you had this preamp? Have you made any power amplifier or other changes? These are fairly old and have been known to have some cold solder issues.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.
