You got something against Aguilar?
I love my Aguilar pick up. I also don’t really have a problem with the stock Ray4 preamp, although, I know you can turn it into a 3 band with an upgrade, but I don’t mind the 2 band, and I don’t hear such a major difference with some of the upgraded preamps, that I choose to leave it stock.
That said, if I were to get 3 more Ray4’s (not out of the question), I would do so for 3 different mods.
1, I would get a Retro-Vibe 78 clone 2 band preamp, that is made identical to the 78 stingray, and I would look for one of the Tone Monster pick ups that are voiced to be like the older stingrays, to make it more of a classic, old school smooth tone stingray
#2 - I am going full fledged NOT STINGRAY, so that I would turn it into a modern metal sounding bass with the classic stingray look.
This would get a DarkGlass Tone Capsule, and a Herrick MM Neo-Bucker pick up.
#3, I would probably go for the EMG pick up / preamp combo, because I hear such great things, and would just love to have one.
But truth be told, I would love to find another used one that I could for a pick up test bass, and get a range of the cheaper ones to test them out and rate them for others to know.
From the cheaper
%Wilkenson (MM style)
%Wilkenson (MM with 4 upper poles and 8 lower poles, like a mass single coil has)
%Radio Tone
%Kent Armstrong
%Herrick (many to styles II want to try)
%Delano
%Delano with the jazz poles on the bottom like the Wilkenson has, to do a direct comparrison between a #50 pick up and a $160 pick up of the same configuration
%Herricck - I also beleive they do one with the 8 small jazz poles on the mm style pick up too
Tone Monster
Nordstrom’s
Seymour Duncan
And I am sure there are many, many, many more.
I wish I had Al’s basses, so I could get a bunch of these pick ups to test out.
Heck, I might buy a couple pick ups, and try to talk him into putting them in, just so we can hear how good / bad / different they are.