iv noticed a high pitch 'hum' which sometimes sounds with certain effects.
i hear this high pitch noise when using any gain pedal, and using a modulation effect straight after.
e.g. with my big muff/odb-3/dha pedals on and a chorus setting on my zoom b2.1u is on, i get this noise, isnt that loud but noticible, more so through headphones
i have tried and checked EVERYTHING, iv tried just havin one of the gain pedals and the zoom between guitar and amp, iv changed and swapped all cables, i have swapped power supplies and made sure its all regulated, i just cant figure out what is making this noise for the life of me, it still sounds even if i have the effects on with no bass plugged in! as i say its more pronounced through headphones out the back of the b2, so its not an amp problem either. from testing it isnt any individual gain pedal causing the problem, as it happens with all of them. only thing it could possibly be as far as i can think is the zoom, but i dont know how or why.
again, this only happens when i have a distortion on before the zoom, otherwise no noise is heard, and it happens with chorus, tremolo, delay, phaser, flanger so far with the zoom , cant hear it with any other effects. doesnt happen with any distortion settings on the zoom. im so frustrated you wouldnt believe!
again to verify, definatly NOT a power supply problem or a cable problem, or any of my individual effects, as i have tried and tested them all indivually with the zoom, all with the exact same noise. if i have more than one gain pedal on, the noise is louder.
help??