I’m going with a “9”. Ever since Sony Japan started their 7” quad SACD reissue program, this is a title I’d hoped they would tackle and it’s thrilling to see it actually materialize. As always, the quad LP replica packaging is a delight.
The percussion aspect of the music suits itself really well to surround, and--for the most part--the quad mix doesn’t disappoint. The rear channels are LOUD and loaded with full-range instrumentation. Even the old SQ LP gave an impressive surround effect, but this will be my go-to version from now on. Highlights for me are “Waiting” (love the rotating cymbal crashes and dueling guitar lines in the rear channels), “Evil Ways” , “Jingo”, and “Soul Sacrifice”. There's also a really neat effect in "Savor" where the time-delay on a cymbal crash in one of the rear channels appears in the diagonally-opposite front channel.
If you have the ability and/or interest in this sort of thing, try auditioning each channel of “Evil Ways” separately - it’s really cool how you can hear the slightly different vocal parts in each corner.
I don’t know the original stereo mix inside-and-out, but there are a few balance things that bug me in the quad. My biggest gripe is that the vocals seem buried in “Persuasion”. Some of the lead guitar soloing in “Shades Of Time” doesn’t quite jump out like it should. The drums (particularly the snare) are a bit recessed in “You Just Don’t Care”. There seems to be a lot more reverb on the drums in “Soul Sacrifice”. I also miss how the conga line that kicks off “Evil Ways” used to pan across the stereo spectrum. In the quad, it’s pinned to the left front speaker.
In terms of fidelity, I would say the album still sounds kind of ‘old’ (I agree with
@skherbeck about the dullness on a few cuts, namely “Persuasion” and “You Just Don’t Care”), but there are welcome extensions on the top and bottom end that make this a far better listen than past releases of the quad mix. The dynamic range hasn’t been compressed--the middle section of “Treat” is explosive, as it should be--and there is some audible tape hiss in the quieter sections, which suggests to me that they didn’t go overboard with noise reduction.
I can’t wait for the rest of the Santana quads to get this treatment, particularly the third album
"Evil Ways":
"Soul Sacrifice":