The sound is solid and detailed, with a nice mono sound brought out by my new AT-mono3/LP cartridge which I bought from a Japanese dealer. This is a "true" mono cartridge in that it responds only to horizontal motion and ignores vertical movement of the stylus. The resulting sound has an almost astonishing decrease in surface noise. Upper frequency details are much better focused. I hope you can enjoy this LP.
A note: in the recently-released box set of the complete RCA recordings of Charles Munch, this LP was issued as a stereo recording. There must have been a stereo tape master made that day as well as mono. I've heard the stereo version and the soundstage is admirably wide but not so wide that there is no middle. Pick up the box set on Amazon while it is still at a reasonable price!