I am not sure if this is a bug or not, but it is a behavior that I find strange. It works as follows:

Pick a channel, any channel with any type of input. Apply signal with the fader at -INF. No audio comes through. All is normal. Begin to slowly raise the fader. No audio will come through until the fader is somewhere past -59.5, where the audio suddenly comes on, almost like a gate even though none is active. Lower the fader below this threshold and the audio will decrease with it but try to raise the fader up again, without exceeding the threshold around -59.5, and the audio will not increase. Increase the fader past the threshold and the audio will again jump to that level. Further, as the fader is again decreased below this threshold, the distortion in the signal increases.

I have tried this with SPDIF surface and analog mixrack inputs and it behaves the same for both. I am running V1.90 on brand new equipment. Again, I am not sure if this is a bug or what exactly is going on, but I would sure love to know because this does not seem like it should be doing this.

~Jeff