I got a holy stain pedal recently to add a little wetness to my flute sound. I thought the tremolo would be a nice bonus.I heard the reverb was good on these pedals and it is. I was getting pretty decent humming/hissing until I read the post about switching to a different power source. I switched to my Danelectro power source that had the same voltage and 200ma and the humming/hissing was gone.The post I read stated the same thing about switching to a Danelectro power supply. Is the power supply that came with my holy stain bad/ it works fine on my Danelectro chorus pedal in line with the holy stain.Strange!