A tiny bit of future proofing

I am trying to create a small buffer of parts for my synths, in particular the JP-8. This beast has around 50 BA662 chips in it, each of which costs 50-60 USD to replace.

I stumled upon someone selling pulled 80017A chips from serviced Juno 106's, and bought 18 of them. Status is unknown but they weren't specifically replaced because they failed, more because they WILL fail.

In each 80017A there are two BA662 and one IR3109, both of which go for around 50 USD. I had to pay quite a lot, but if I am able to rescue at the chips from at least TWO of the 18 I will turn a profit (or rather, save money if I ever need the chips).