Working on getting my Unipre5 installed into my Lakland 55-94. It's replacing the stock Bartolini preamp. Having a weird issue, but so far I think this will be exactly what I was after for the sound of this bass.
I found that if I connect a bridge pickup I get alot of buzzing sound, like a grounding problem. I've tried 3 different ones just to make sure it's not the pickup itself. It goes away mostly if I touch something metal on the bass. I do not get this buzzing at all in passive mode, or if I roll the blend towards the neck pickup, or if I install a plain "jumper wire" instead of a pickup in the bridge position.
I emailed John East, but I wanted to see if anyone else has some insight while I'm waiting (I'm not the most patient person

).