I have several of the commerically issued reel to reel tapes from the dynagroove era. They seem to suffer from the same distortion problems I found on the discs...or is that just a problem with my ears...
As I write this, I don't recall having heard any CD releases of the dynagroove recordings. If the master tapes were ok, are the transfers good?
One of my favorite BSO recordings from that time was the DelloJoio Fantasy and Variations. After several copies of the disc and reel to reel tapes, I gave up and now listen to concert broadcast tape I have.
Karl