Xotic Effects USA pedals are used by some of the most respected guitarists in the biz, including jazzer and sometimes bluesman Scott Henderson, Andy Timmons, and the nicest shredder in rock, Paul Gilbert. These boutique pedals are highly desired for their roadworthy construction and transparent tone. On the surface, the three most well-known Xotic pedals seem to be quite similar. The AC Booster, RC Booster and BB Preamp all feature volume, bass, treble and gain controls in the same layout. In particular, the RC Booster and BB Preamp may look similar on paper, but there are key differences.
The RC Booster (favoured by Paul Gilbert) offers a super transparent 20db+ clean boost and a +- 15db 2 band active EQ. The BB Preamp ups the stakes in terms of available clean boost, with up to 30dB+ available. The BB also has a pre-gain stage which allows the pedal to more closely mimic the characteristics of an amplifier. The pedal includes true bypass, so the circuit is completely removed from your signal chain when the effect is disengaged.