There are some on Heil's site. GL John From: Irwin Darack idarack I have two Microphones and looking for recommendations on settings. Current settings are: Heil GM-5 Desktop - rPH (Bias Off) Heil Proset 6 iC Headset - rPH (Bias On) Any recommendations on the Equilizer settings? -- Thanks and Happy New Year, Irwin KD3TB