1989 Criterion LaserDisc [CC1109L]: Like the later Criterion LaserDisc - see below.
1993 Criterion LaserDisc [CC1324L]: Excellent sound - no hiss reduction and very clean.
2011 Warner DVD: Strong noise reduction, with everything above 6 kHz removed. Very muffled.
2018 Criterion Blu-ray: Less noise reduction than the Warner DVD but still plenty. Quite muffled next to the LaserDisc.
