This recording comes by way of a torrent (thanks to "jazzrita" for seeding). It is an audience recording. The sound quality is reasonable, I'd say typical of a modern audience boot. I've enclosed a small 1 min mp3 sample (see Links) so you can judge for yourself.
Joe McPhee - Survival Unit III
2007-June-20 NYC, USA,Angel Orensanz Center, 12. Vision Festival 2007
1 Title (JMcP,as) 8:34
2 Title (JMcP,as) 7:52
3 Title (JMcP,as) 14:53
4 Title (JMcP,fh) / Announcement JMcPh 14:38
Total Time: 45:58
I'd be interested to know where McPhee got the name "Survival Unit" (was it a personal statement about his life?), why there wasn't a SU I, but III came 30 years or so after II.
Sample, flac and mp3 links in comments.