Huh! That's interesting. My MM-04 is not noisy and works as I want it to. The two copies of the JE-1000/MM-04 I bought off of Ebay both have an issue of "bleed through" when the pot is fully down, but no noticeable noise(other than what is expected when you crank the gain, however I have all mine set very low on the gain/boost pot). I'm wondering if both of my clones have wrong values on the potentiometer, but I haven't opened and compared to the MM-04 yet. From the schematic I gleaned that it's supposed to be a 50k ohm pot, so we'll see. Might be an other issue too of course.