A dual pickup system with an equalizer on the external preamp RAPTOR-2. Similar to SYSTEM-2, we have adopted combo jack on the input terminal and are now able to enter XLR and TRS. Basic configuration is a piezoelectric pickup named “ body microphone ”, built-in preamp, external preamp. Combine with various magnet P.U (sold separately) ” and the newly developed under-saddle piezo P.U to build the best dual pickup system.