You can't sidechain h-reverb it has a built-in dynamics part which allows you to gate, comp or de-ess.

interpolated
You can't sidechain h-reverb it has a built-in dynamics part which allows you to gate, comp or de-ess.

The context here is sidechaining a compressor that's after a reverb, and you can do that with any reverb as long as you have a sidechainable compressor to go after it. To sidechain a reverb would be meaningless as far as I can see. You're right though, H-Reverb does have built in dynamics, there is a ducking feature in it. 
 

The point was I was correcting my previous statement. I was thinking of Metafilter which has a similar interface. ;-0
 

timidi
https://www.youtube.com/watch?v=LObw1UsFrWQ
 

Understood !

Can Pro Channel compressor be used for chain

BMOG
Can Pro Channel compressor be used for chain

Yes.  The PC4K-S Compressor can be sidechained.

Thanks what a side chain gate in Pro Channel

The PC4K S-Type Expander/Gate was a paid module. It has a side chain as do other paid modules: CA-2A T-Type Leveling Amplifier and PC4K S-Type Channel Compressor. None of the paid modules are available for purchase ATM. The PC4K S-Type Bus Compressor is the only PC module bundled with CbB (also SONAR Producer X series and Platinum) that has a side chain.
 
The Sonitus Compressor and Gate have side chains. They may be loaded in the FX Rack or ProChannel.

Thank you