I have an SRF706. Ibanez says the magnetic pickups are passive.
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I realize that all Piezo's are active. I also realize that many basses have active pre-amp with passive pickups. Can you clarify for me?
My SRF706 is my 5th fretless bass. I love the neck. I don't have any buzzy spots or flat spots on the neck at all. It is perfect as far as I can tell. I did have some problems with getting my intonation just right. The combination of the wider neck, flats, no lines, etc... I don't know what, but it has taken me about 3 weeks to get used to it where I trust myself to play it live. Gonna practice with the band tonight and play live sunday at church.
I have a Gary Willis Signature GWB-35 which is not really SR, but is kind of an SR. Based on the SR series and will fit in an SR case... not really sure if it is or ain't an SR. Anyways, I have modified it. Dropped some money in there by swaping the stock pickup for a
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Invalid Link Removed. The volume knob is push pull for active/passive and I have a switch for changing the wiring the poles of the pickup from series to parallel.
Here is me playing that bass 3 years ago. I hear some pitch issues. I hope I am a better player now than I was then.

This was captured with a camera on a tripod using the built in mic. Not great sound quality.