What I know about hum is that it starts from the pickups..
Then your distortion will amplify the hum from your pickups. Kaya nag iingay..
Kung naka 0 ang volume knob mo, tapos walang hum, then siguro malaki chance na tama ang iniisip ko
Pag ganyan, noise suppressor pedal will do. Pero suggest ko ay ilagay mo yan right after ng gitara mo.
Not between the amp and your distortion pedal.
Sa ganitong paraan, namamaximize parin ang signal mo from distortion to amp. Kasi kapag after ng distortion yan, mapapansin mo na may volume swell yan..