Q8 to DTS to SACD what a change...
This classic album has, sonically, a very troubled history.
The original stereo master was quite noisy (possibly NR was not used).
The album release had a lot of rough edges that I guess some blues fans found appealing. The rest of us found it -- rough.
Worse, the stereo master was "unavailable" during most of the CD era, resulting in many releases produced from even noisier, later-generation dubs. And so this title joined a short list of CD's to avoid, including Wings /
Venus and Mars and much of the Queen catalog.
The original quad mix was limper and noisier still, though quite discrete.
Around 30 years later, the current label finally got around to dealing with this album properly. A massive track cleanup, brand new 5.1 mix and high resolution release finally gave this title its due, not only patching up past sonic wrongs, but bringing the sound into the 21st century. Not as discrete as some would prefer, but as to which version your ears will appreciate most? An easy choice.