http://m.sfgate.com/music/article/LSD-king-Owsley-Stanley-s-Sonic-Journals-11209700.php#6

He’d clutter the stage with twice as many mikes as there were musicians and once he had it right, he would stand at his console and control it all with just the volume knob. The music would run through the sound board and into Bear’s trusty Nagra reel-to-reel. The tapes were never cut and spliced. They ran through an entire set, and were called “Sonic Journals.”