Reply To: setting the bias current (scratchy Cortado) Shop › Forums › Cortado Contact Microphone Forum › Cortado FAQ & Support › setting the bias current (scratchy Cortado) › Reply To: setting the bias current (scratchy Cortado) August 2, 2017 at 4:22 am #2158 Nick BurgeParticipant Centre post Q1 = 22.9v, left side pins on R1 and R4 = 20v.
