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May 12, 2018 at 4:00 pm #149235
It's very hard to analyze these problems without being there.
But, I am obliged to say that the only thing that has appeared to have changed is your amp – whatever was done to it is the most likely cause of your problem.
To my knowledge, the only issue that the H9 has in effects loops is that it is intended to be run at instrument level, and thus can be overloaded in a hot loop.