K&K Bass Master Pro Rockabilly system - purchased from another great TB'er this past year, originally purchased from Bob Gollihur's shop. The pickups sound great and the preamp works very nicely. The Bass Master Pro is a very sophisticated transducer system for the upright bass. It consists of three components: The Double Big Twin bridge surface mount transducer, one Bass Max wing mount transducer, and a very powerful dual-channel preamp with excellent features. Here are the specs: Technical
Data Four-Head Transducer: 3/4" Head Diameter Wing: 22 mm Diameter / Thickness 5 mm Preamp Dimensions: 3" x 3.5" x 1" Input Impedance: 1 MegOhm Output Impedance: 10 KOhm Input: Stereo ¼ Output: ¼ Power: 9-volt battery Supplied with Stereo Connection Cable $150 shipped in the CONUS - PayPal or USPS Money Order only.