[Help Identifying 1980s Steinberger 5 String Fretless]

Awesome, thanks! I just emailed them and will post back here when I hear from them. 

[Help Identifying 1980s Steinberger 5 String Fretless]

Hello again gang-

It seems that the bridge pickup on this XP-25 is dead. I've tried to research finding a replacement and apparently it's a kind of rare thing to find.  We ordered one pickup that we thought would fit,  but it was slightly larger than the one installed. From what I found, this was a modified pickup done specifically for the Steinberger's that had 5 strings on a four string neck.  (hence the IV-V sticker on the back.)

I was wondering if anybody could help point me in the right direction towards finding one, we'd like to keep this bass stock.

[Help Identifying 1980s Steinberger 5 String Fretless]

Thank you so much! I guess I wasn't as far away identifying this as I thought. I'm a vintage keyboard/percussion guy so this is out of my normal area of expertise.  You are correct, it has a circuit board inside and battery and active pickups. We actually have some spare parts that came with the collection, including a few necks. One of them is the wider 5 string neck. 

[Help Identifying 1980s Steinberger 5 String Fretless]

Hey guys and gals, we helped one of our local customers sell several Steinberger guitars and basses when their father passed a couple years ago.  I have tried to research this model, and I just can't seem to nail down exactly what it is. What I know (at least I think so) is that it is the 4 string width neck, bolt on neck, wood body, no lined fretless 5 string.  It has a serial number of N5907. I thought it was an XP series, but I'm not really sure.  I really appreciate any insight.  I do have more pictures if needed.