I just got a RBX-5 given to me today because of one my teacher knew stoped playing, but i can't find anything about it... althrough it seems old, well used... but it's an awesome bass :bassist:
It can be how you pluck or how you'd put your strings on... Got a technique, I play like 1 hour minimum a day. but my bass only gets out of tune every 3 week or 4 th.