I have these three Audio Lab titles on vinyl (and Side by Side on sacd). Get Happy is still cheap.
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Sound on all of them is fantastic, as you mention, particularly drum-centric “The Dialogue,” which may be the best recorded drums of any album I own. I used to have Side by Side on vinyl, but it was a noisy copy that didn’t work for me given the style of music, so I sold it and bought the sacd.
As for the music itself, I prefer my TBM titles, but there’s no denying the genius of Okihiko Sugano. Given the near fetishizing of audiophile engineers in the US, particularly over the past 5-10 years, it’s weird that he’s not more known here.
I can’t remember if I found this great, detailed piece about him from you or someone else here on N&G or on my own, but it’s a great read.
www.highfidelity.pl