Nice article for engineers to understand something that most guitar players will intuitively know. One of the great things about a hi-gain setup like Hendrix's is how the feedback loop will inject an element of controlled chaos into the sound. It allows for emergent fluctuations in timbre that Hendrix can wrangle, but never fully control. It's the squealing, chaotic element in something like his 'Star Spangled Banner…
One thing for me to notice is his playing does not require a rhythm guitarist. I discovered that what worked well is Mitch Mitchell as a Jazz drummer his playing was heavily influenced by classics. In a way it complemented Jimi's guitar tone so well.