Greco Rick 'faker, ceramic magnet pups. Never really noticed it before as the bass was in for some fret-work and I took forever to pick it up but tonight I noticed the A string doesn't ring fully. Nothing is inhibiting it but when I played a few runs across all four strings the output of the A is lower than the others, though the D isn't far behind. It's more pronounced on the front pup, as in the E and the G are really loud. The front pup has four unadjustable pole-pieces and a bar magnet across them. It could be the strings so I'm going to change them first but just putting this out for discussion.