

but have since seen some pics of sustainer pickups as found in some freakout 1980s hair rock guitars, kramers particularly, and they seem to have either floyd rose or schaller sustainers housed in a complete brass enclosure a lot like this one.
this is severely shielded. meticulously soldered brass enclosure for back and sides and even the masking tape on the inside of the plastic mount is copper-reinforced shielding tape. fully resin or wax potted obviously.
this is one page i was looking at with similar pics. http://www.vintagekramer.com/parts9.htm
if it is a sustainer it seems they need some supporting circuitry to get the thing to work as sustainers rather than just pickups. i've found a rough diagram for a basic floyd rose sustainer pickup circuit which might serve as a starting point.
i've always stuck with pretty basic guitar electrics, never even had active pickups, so wondered if anyone here would have some knowledge of these?
basically, do you think it's a sustainer? are they worth the bother or are they just gimmicks? and is the supporting circuitry for the floyd rose and the schaller sustainer interchangeable (a pickup being a pickup)?
many thanks if you can cast some light on this one. have had it a while now and always wondered what it actually was.