4CM - using audio analysis software to find "correct levels", if there is such a thing. in Helix Posted March 28, 2021 All I really meant by suggesting scope view is that (for me anyway) I relate more directly to the waveform than its spectrum. And even that isn't particularly true as I relate pretty well to the spectrum. If I were doing this I'd check it at different frequencies as well. Nothing wrong with your approach. I don't know if it's possible to bypass the A/D/A conversion on this device - more of a hypothetical concern. Simply meant to say: run it through A/D/A processing with nothing else going on so that you know that any problems are being introduced by the I/O rather than the headroom setting of the flanger, for example.