Hi. I'm experiencing some odd results using the clipping tools. The clipping behaves as expected at low frequencies but modulates rather than clips at higher frequencies. The problem becomes perceptible at about 5/6k and is really noticeable at 8/9k as the attached scope shots show. They're both at the same settings. The top one is a stored shot with soft clipping. The bottom without the soft clipping. SigmaStudio schematic attached. This is NOT the same board I was having the CLKOUT modulation problems with. The clock on this board is stable.
Hope someone can shed some light on this.