That might be an expensive module - lots of VCAa and Lag/envelope circuits. Probable easier done using Vactrols driven by a A-160/A-161 type circuit with some lag added to smooth the transitions further than the Vactrol's built in lag.
-James

On May 13, 2010, at 1:52 PM, Monroe Eskew wrote:

> Module suggestion: Similar to sequential switch, except there would be a
> crossfade instead of instant step between successive channels. Crossfade
> time to be set by a knob, selectable from 0 to long.
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