Three best audiophile CD/LP in your collection

Bongo...Hijera and Teatro are 2 of my all time favorite albums. Great sound is a bonus on those. Classic records.

I have quite a few but of late it's Sonny Rollins "Way Out West (1957)" XRCD24 with "Saxophone Colossus (1956)" a close second. High on the list is Gene Ammons "Boss Tenor (1960)" XRCD. This is really ironic because these albums are damn near 60 years old but they sound so much better than any new music I have. Sound quality aside, this is some sweet ass music...soulful!

I forgot to mention...the best recording I have and really have ever heard is Arne Domnerus "Jazz at the Pawnshop". I own 2 versions, DCC Gold and XRCD and prefer the XRCD version. Something every audiophile should hear at some point, pretty crazy "you are thereness". The vibes on track 2 really sound amazing. I also have the XRCD version of the Schefield drum album which many marvel at but Jazz at the Pawnshop is a significantly better recording. Seek one out!

Alpass...I have no idea, sorry I cannot be of more help. It has been sometime since I have looked for it. I am pretty sure it's still available and a quick search may show some of the online vendors that carry it. Pricey thing if I remember right but you will be amazed at what your system is capable of when you put it in.

Just looked real quick and looks like Amazon has the K2 Fim version for $80.

Yes, the K2 version is better than the SACD to my ears although it's subjective (as is the quality of the music...see above!)...