Detail overview of BIAS Desktop by Fluff!
BIAS Desktop is an audio plug-in (AAX/RTAS/AU/VST) for Mac OS X and Windows, and it’s all about guitar tone.
Instead of providing a fixed number of amp models, BIAS Desktop represents an entire new concept: You can virtually design your own amp models with its simple interface, use Amp Matching Technology to capture any golden tube amplifier, and finally you can share and download amp models from ToneCloud, just like Spotify for amps.
http://www.positivegrid.com/bias-desktop