I have the album Live at Woodstock in digital format. I noticed that everyone in Hendrix's band is (seemingly) tuned to some pitch between Eb and E.
I've heard some various, uncited sources that they were actually tuned to Eb, but the recording was played too fast on a record player which increased the speed and subsequently the pitch. I don't have access to the vinyl.
It's probably a slight difference in playback speed from the speed it was recorded at. This would be a particular problem if you are dealing with old recordings, live in a country that uses PAL, or both.
It's E flat boys. The difference is in video, vinyl or digital whatever your listening to. I have a strobe turn table and when it is set proper everything is E flat.
Yet it's clearly not Eb in the digital 1999 release of Live at Woodstock.
Could be that the speed of the recording is off a little causing a change in pitch.
Some circumstantial evidence:
Hendrix's other live recordings seem to all be near exactly Eb (Monterey, Filmore East, etc.)
The tempo of most of the songs seems to be faster than any other recordings of the same song (e.g., "Fire").
Is this "recording speed" theory truly the case? Or is it simply a result of precise, but inaccurate tuning?