Sorry to be an audio nerd here, but it's my actual day job, so please bare with me...
CS21 has a serious problem. It hasn’t been Dolby decoded!!
The master tapes would have come from an era (70s and 80s) when Dolby A noise reduction was industry standard. Dolby A was a process that encoded a very bright and compressed signal to tape above the noise floor, and then decoded with the reciprocal curve on playback, thus reducing inherent tape hiss significantly.
However, if you were to play back Dolby tapes without decoding them, they would sound super harsh and bright, which brings me to this. It seems that whoever was tasked with digitizing the master tape for CS21 did so without decoding it! Not sure why, but it happens.
Since I think CS21 is a rad album, I’ve decided to fix it with my very own Dolby A301 unit. It's not 100% perfect mind you because ideally you would have a Dolby reference tone (from the tape) for calibration (which we don't have here) but it definitely sounds fuller, more dynamic, and easier on the ears now that it’s been decoded, IMO.
So if you like this record as much as I do, give this version a listen!
pixeldrain.com/u/VDrKc46M