Re: UOA5 ?
I'm glad you are satisfied with assuming you know all the nuances of tone change in pickups you have obviously never heard with an UOA5 magnet. What I don't understand is why are you trying so hard to shut questions like this down, when there are members who may have tried these exact combos and found unexpected things, good or bad. After all, this IS a discussion forum last I checked...
Actually, I HAVE personal experience with the UOA5 in many pups over the past 5 years(including the ones you've mentioned). How presumptuous of you to claim I have never heard them.
I'm not trying to "shut questions like this down" at all. It's just that your question has already been answered by Blueman, LtKojak, myself, and now FuzeG4.
You seem to be rather dense, so I'll spell it out for you...
Magnets have certain characteristics which they impart to any pup that they are installed in. An A5 has bright highs, scooped mids, solid bass, is very articulate. A UOA5 is softer in the highs, has more mids, a slightly softer low end response. It still retains that A5 character, but it is smoother/softer. It is still chimey and articulate, but not spikey in the high end. It is between an A5 and an A2 but much closer in character to the A5, but with some of the response of the A2.
You want to know what a UOA5 will do in a 59?
It will soften the highs, add some mids, reduce the boominess in the bass and make it feel a bit softer, and generally make the pup sound a bit smoother and more even (tonally).
You want to know what a UOA5 will do to a Demon?
It will soften the highs, add some mids, reduce the bass, and generally make the pup sound a bit smoother and more even (tonally). The Demon already has a pretty even tone.
You want to know what a UOA5 will do to the JB?
It will soften the highs (the high-mid spike, in this case), add some mids (esp lower mids), reduce the bass and make it feel a bit softer, and generally make the pup sound a bit smoother and more even (tonally).
You want to know what the UOA5 will do to a Custom5?
It will soften the highs, fill in some mids, reduce the bass slightly and make it feel a bit softer, and generally make the pup sound a bit smoother and more even (tonally).
You want to know what the UOA5 will do to a P-Rails? A Jazz? A Vintage P-90?
Well, I think you get (or should get by now) the answer.