Electrical hum quandary in pedal chain
Hello wise elders and wise youngers of talkbass,
I have added a new pedal to my pedal chain and am now getting a brutal electrical hum.
I added in a strymon blue sky reverb pedal which claims to draw 250mA. I am running 7 pedals off the 9v DC jacks on my fuel tank classic power supply and also a markbass compressore pedal off the 12v DC jack. The fuel tank claims to deliver 500mA to the 9v jacks and a separate 500mA to the 12v.
The brutal hum disappears when I unplug one of the 9v pedals OR the 12v compressore pedal.
Am I asking too much of my power supply? Do I need a separate power plug just for the strymon?
Any advice welcome. I know nothing about electricity...