I tried my FM9 with my KSR Gemini 100 watt amp last night. When I put the Gemini on the lead channel and engage the bright switch, I get this odd high pitched squeal. When I disengage the bright switch on the amp, the high pitched sound goes away. The amp does not behave this way without the FM9, so I know it’s some type of interaction between the FM9 and Gemini.
Could this be a tube related issue? Or some electrical interaction with the FM9 and Gemini? Neither the FM9 or the Gemini make this sound separate from each other. Any advice on things I could try would be much appreciated.
Could this be a tube related issue? Or some electrical interaction with the FM9 and Gemini? Neither the FM9 or the Gemini make this sound separate from each other. Any advice on things I could try would be much appreciated.
Last edited: