As the name suggests, the BB Preamp has a different purpose from the other two Xotic pedals. Its capable of over 30dB of clean boost, along with the two-band active EQ controls found on the other pedals. Starting again with our clean settings, we noticed that the BB needed a little extra boost to the volume knob (to about 55 per cent) in order to match the clean amp sound. This done, its basic sound turned out to be less crisp and bright than the RC; theres a slight loss of top end, along with a hint of compression, even at this clean setting. Boosting the tone controls produces similar results to the RC, although the BB has less spank and a lot more low-end.