Hi all, this is my first post here, so please bear with me.
I built a Murder One using revision 5 of the schematic, minus the bias switch, just used the 100K resistor over to pin 5 on the 1044. It sounds fantastic except for one problem: it produces a soft hum at about 17KHz. So I was wondering if anyone else had run into this, or if you guys had any ideas as to how to fix it.
Thanks in advance for the help.