I've had the SQ Quadraphonic LP disk set (even though I never had quadraphonic stereo equipment) issue of Bernstein's LSO performance ever since it first came out, and from all subsequent versions I've heard of this performance, the SQ Quandraphonic issue has the superior sound of the entire lot. If you ever come across a copy available, GRAB IT! The only down side of this recording is that the organ is virtually inaudible. But in the video/DVD versions, it's nice to see Lenny in action.