Hello
 
I know that the PC4K S-Type Expander/Gate module is supposed to be an additional module to Prochannel. However, when reading the manual (RTFM;) you can almost get the impression of this module being a part of Sonar X2 Producer (which I have). I really don't see a need for this product as I have alternatives, but still... I think that they should be clearer about the module being an extension to ProChannel
 
A screen dump from built-in manual of Sonar X2 in the "What new" section in Sonar X2
 
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And there is a video released with X3 on the subject of ProChannel side-chaining.  See
 
http://www.cakewalk.com/CakeTV/SONARU.aspx/Go-Deeper
 
While I guess it doesn't explicitly say the PC4K gate expander is included in the package, this page is to "learn more" about Sonar X3, "This course covers in-depth functionality of a particular feature in SONAR." and nowhere does it say this feature is not actually in SONAR.  I fully expected that module would be in my producer package.
 
But it does seem you can accomplish mostly the same results using the PC 4K Compressor, which is included.

EDIT - WHOOPS / THAT'S THE COMPRESSOR... NEVERMIND.  :/