Slate Digital added a VIRTUAL TUBE COLLECTION (VTC) to their Everything Bundle Pro on 05/30/17.
It is a set of three plugins for their Virtual Mix Rack (VMR) that recreate the sound of classic vintage tube circuits. Each module can act as a preamp, a saturator, and even a virtual tube summing console.
To install VTC, you need to update your VMR through the Gobbler app (or your Gobbler Marketplace account) Installers page. VMR will be listed in the "Updates" section of the Installers page of the Gobbler app.
Built 188.8.131.52 for both OSX and Win.
The Gobbler team.