Barcus Berry 3125 Cello Piezo Transducer with Pre-amp Clamp style pickup can be easily attached to or removed from any standard type bridge. No drilling or tools needed. Equally responsive to delicate high tones and deep lows. Delivers a cello's full musical range. Pickup transducer clip-on piezo cello transducer. Preamp 3000A piezo buffer preamp with EQ. Attachable belt clip with one set of dual lock attachment strips. Velcro strap. Black metal strap mounting bracket with one set of adhesives.