razzkazz Posted April 29, 2014 Share Posted April 29, 2014 Hi Everyone I have been using my FM4 for years and have always been happy. Recently I was using it in a setup that I wanted to calibrate level (using a sine tone). I noticed 2 things that bother me; When the mix control is fully turned down and no processing is happening there is a small amount of distortion being added to the signal. With this setting there is also a level difference when the effect is turn off/bypassed, which is the effect of the distortion being added when the effect is engaged. I always read that the bypass on these pedals was a "true bypass". The signal going in and out of the pedal is not peaking so I am quite sure I am not adding the distortion to the signal path. I know the pedal distorts when you overload the input. Has anyone else noticed this? I have attached a recording showing the issue. Thanks Alan Line6 FM4 distortion test.wav Quote Link to comment Share on other sites More sharing options...
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