Well my dear friend Sheriff,
I'm sure one day we will look back on this, laugh nervously and change the subject.
Peace brother,
Now, to our guest.
Here's what I've found out so far. Adaptec SCSI SE. Released in 2002. That's all I could see on the card using my magnifying glass. Ouch... Never make me do this again. Even for money.

Talked to my dealer and it is confirmed. AKAI S1000 and S1100 were meant to work with only one type of SCSI interface so regardless of when our S1100 was purchased it has the same SCSI card as it did in the year 1990. Guaranteed that it wil work with any Mac. Can't say anything about PCs. Downside of using it with the Mac is that you will not be able to start your Mac when the SCSI cable is connected to your AKAI. You will have to boot the Mac and then connect the cable. OSX handles SCSI connections in a less anal manner but since you're using OS 9 you'll have to do what most of us did for at least a decade. Risk blowing your SCSI port every time you connect/disconnect it to the Mac while the power is on. Mind you, I never had a SCSI port die on me. NOt from hooking up samplers anyway.
Another good news is that SCSI cards that will work with Macs and allow you to connect to your AKAI are still available. YOu will have to talk to dealers for detailes. That's as far as my expertise goes.
You're looking at spending may be about $50-$60 tops.
-ED-