Guys, when I hook up my effects board to my amp, I get this loud hiss especially on my overdrive channel. I run my effects through the "effects loop" on my board there, but then into the front of my amp. (not through the effects loop) I know all amps have some hiss, but this is louder than I am used to. I run the effects in this order in case you cant tell from the pic what is what.
Dunlop hendix wah-Ibanez tone lock Phaser/modulator- Ibanez delay-ibanez flanger-EVH Phase 90-

Thanks for any help you can give me.