If you can find it, there was a CD that came out about 1988 "Live at the BBC" or "Radio One Sessions" or something like that. It was a set of recordings that were live in the studio for BBC Radio-One broadcast. The sound quality is decent and the playing as amazing.
Live Hendrix.....
I realise most live Hendrix is poorly recorded and often inconsistent performances...at any rate..I have the Berkely 2nd set...which is quite good...any others that come to mind sonically?