I have a TRB5II, that I bought used, and the pre-amp was having some very bad noise problems. I ended up replacing it with an EMG BQS Control (the three band one) which really opened the bass up and fixed the noise problem. However, now the bass has a very bright high end that is great for some things, but I can never seem to really tame it even after experimenting with the DIP switches that adjust the knee frequency. I would like to try to replace the pickups with something else, not so much to get the "Yamaha TRB sound", but to get a good ash body/bolt on neck/35" scale/soapbar pickups kind of sound. I have been considering Bartolinis and EMGs. BTW, I am not against doing some minor wood chiseling if neccessary.