Same here. 14 years, same amp, same cab, same bass, hundreds of gigs. Does it sound right / wrong? Dunno. Sounds like a deeper sound than the guitarist so that'll do. In tune? Dunno. Sounds alright, nothing really sticks out as bad.
Year 15, behringer amp and new ibanez bass (mainly because the latest band we can rehearse virtually anywhere and lugging a 410 around gets awkward) gt6 on it's way, just because I fancy experimenting with some different noises and don't really understand the whole 'sound' concept.
Probably end up chopping it all in and going back to the original shitbox rbx200 which had 20 previous uncareful owners.