Home › Forums › Products › Vsig and Preset Development › How to hook up two H9’s into my effects loop. › Reply To: How to hook up two H9’s into my effects loop. March 11, 2022 at 5:00 pm #162789 meddmanParticipant I’m tuning mono. Running all my distortions and over drive tuner and Wah thru front of amp. I just want to run the two H9 into my effects loop in series. I read one post but got no sound.