AmpliTube 5 by IK Multimedia is a Virtual Effect Audio Plugin and a Standalone Application for macOS and Windows. It functions as a VST Plugin, an Audio Units Plugin, a VST 3 Plugin, an AAX Plugin and a Standalone Application. AmpliTube 4 by IK Multimedia is a Virtual Effect Audio Plugin for macOS and Windows. It functions as a VST Plugin, an Audio Units Plugin, a VST 3 Plugin and an AAX Plugin.

IK Multimedia today announced the release of MixBox, a “series 500” virtual rack plug-in for Mac and PC.
The MixBox features 70 studio processors and creative effects from IK T-RackS, AmpliTube and SampleTank, plus four new reverb algorithms. It integrates these processors into a convenient and intuitive channel strip layout that can be used as a plug-in for any DAW or offline. /mega-limited-vst-free.html. View the complete collection of gear and effects here.
Users can create and store their own channel strips in an 8-slot “rack” that can be used in all major DAWs. With drag-and-drop routing and a range of advanced controls such as wet / dry mixing, side chain and single processor gain, users can assemble even complex processor chains in seconds.
The Standalone MixBox offers a complete, easy-to-use mixing experience for virtually any situation, with eight separate racks of eight processors each.
Audio can be fed to the computer from any source such as a digital mixer or audio interface, and the MixBox’s main panel will offer control of all eight racks at once. Users can load rack presets, add or remove processors from each rack, activate side-chain, and control I / O and gain for each rack — all from a single panel.
Beginners will benefit from hundreds of high-quality effects and presets and over 600 presets, while advanced users can speed up their workflow using a custom format to instantly save and recall entire chains of custom effects.

I've seen several posts on the subject of using AmpliTube in Reaper 5, so if anyone has figured out the correct process please let me know.

I am running Amplitube 4 free on OS X 10.11.03. While the application works fine the VST plug-in is missing from Cubase. AmpliTube 4 VST plug-in. By IK Multimedia AmpliTube 3 FREE is a full-featured version of AmpliTube, with 24 gear models included. Plus, the included Custom Shop allows you to try and buy over 200 new gear models available. AmpliTube 3 Upgrade (available to all previous AmpliTube 2, AmpliTube Metal, AmpliTube Jimi Hendrix™, AmpliTube Fender™ or Ampeg® SVX™ registered users) $199.99/EU 149.99; AmpliTube 3 Pedal (bundled with StealthPedal USB/MIDI controller and audio interface) $399.99/EU 299.99; These products are already available in the IK Online Store. T-RackS 5 Full (Win) T-RackS 5 Full IK Multimedia 5.0.0 32-bit and 64-bit (VST) Windows 8 and 10 Instructions attached. Direct Download (1.6GB).

Ik Multimedia Amplitube 3 Free Vst Download

I know where my Amplitube4.dll and Amplitube4.vst3 extension files are located in my PC, but when I try to add them from the preferences window in Reaper, they don't show up.

Ik Multimedia Amplitube Custom Shop

In other words, they exist, but the window doesn't show them as being there.
And I'm not sure if there's anything else that I need to do for them to show up.

Ik Multimedia Amplitube Max

I'm not stupid, just a bit inexperienced as to how to do it.
Any help or suggestions are appreciated.
AS an aside, AmpliTube works fine as a stand alone, as does Reaper. I'm just wanting these 2 to make friends so I can get some work done.