The software can run as a standalone program on your computer. You can connect your guitar directly to your computer's audio interface (or even your computer's microphone input with a suitable adapter) and play through the virtual amps and effects in real time with impressively low latency.
Installing Guitar Rig 5 Pro v5.11 involves several steps. Note that R2R versions are typically provided as unlocked software, bypassing the usual registration requirements. Here’s a general guide:
If you’re looking for a free, legal amp sim with similar features, consider , Neural Amp Modeler (open source), or Ignite Amps plugins.