Equipped with bass-specific tuner circuit for easy tuning even at low frequencies The Pitchblack XS Bass has a measurement range starting from C0 (16.34Hz) - covering over an octave below the bass guitar's low E string, which makes it suitable for all bassists including those downtuning or using 5 string basses.   ULTRA BUFFER optimized for bass and switchable to true bypass The Pitchblack XS Bass's ULTRA BUFFER technology has been fine tuned  with the bass player’s needs in mind to deliver a fuller, more powerful sound. You can also switch between true bypass and ULTRA BUFFER to suit your preference and environment.