Light and Shadow

Multiband Ducking

SideChain ReAction (SCRE) is the most advanced yet simplest multiband volume ducker, envelope shaper and band splitter available for Reason.

Mastery and moRe

Cardboard

This RE is absolutely the Swiss Army knife for multiband sidechain work. Seriously, look no further, it's that great. Pick this thing up ASAP!

Ed Bauman

The Most Powerful
Sidechain Tool.

SideChain ReAction is a must have tool; a Swiss Army knife of CV modulation and gating/enveloper in the same device.  I highly recommend it.

synclab

SideChain ReAction is a

must have Tool.

GUI looks fine and it's very simple to use.  Sound quality is good, and it does the job as it should be.  Price is also really good for the features it have. 10/10, I like it a lot.

Navi Retlav

Realy good for ducking
and creative use.

Phase and Stereo Imaging

CoreReLation Phase Analyzer (CORE), is the first and only Reason rack extension designed and optimized for detailed phase and stereo imaging analyzation.