MP FGC terrible hiss!

[Michael_V]

I just got this last week. Played it, loved it, left it on my pedal board over the weekend, and when I came back to play it on Monday it was making this very loud hissing noise whenever it was on. I tried changing the cables, took out the battery, checked the connections to the pedal power 2+ (9V regular). Nothing worked. What is going on? I am tempted to send this back and wait for a PGC...

Thanks!