On Vintage Delay I had to set either the Depth on the Param 2 page to 0 or the Rate on the Param 2 page to 0 to avoid a nasty harshness.
First recording is Vintage Delay – feedback 100%, delay 1 = 1000ms, delay 2 off, hicut full open low cut at minimum. As note feeds back, delay time adjusted down to 0.
Summary is – at 100% feedback (and the other mentioned adjustments), the H9000 does do smooth delay changes. No idea what that modulation is doing to the audio though. I cannot get the H9000 to overload though. Other digital delays I have (D5000, D-Two) also seem to limit this experience.
Second is the Publison DHM; note the feedback goes past overload. 🙂