Hello everyone, looking at an amp which would work well for both electric and double bass. I have exchanged a few e-mails with dave from thunderfunk, he assures me that if the tube emulator switch is off on the tfb550, it is a great double bass amp. I have read that the tfb 420 is not the greatest for double bass, well, not as good as say, a clarus or walter woods. I guess I can always order it and give it a try, I live in Canada so there are no dealers near me. Has anyone else tried this amp with double bass? Thanks!