Bass Master RB Pickup System for Rockabilly and Slap Bass Unleash the full potential of your upright bass with the Bass Master RB, the premier transducer system designed specifically for Rockabilly and slap bass styles. This system features the Bass Max and a specialized Fingerboard Pickup, combined to enhance both the percussive fingerboard nuances and the robust bass tones essential for a dynamic performance. Key Features: Dual Transducers: Includes the Bass Max positioned in the bridge wing for strong midrange and balanced string response, and a uniquely shaped Fingerboard Pickup for customizable slap and growl. Two-Channel Preamp: Offers separate bass and treble controls, plus internal gain adjustments for each pickup, allowing for precise sound shaping up to +/- 20dB. Easy Integration: Compatible with existing Bass Max setups, the upgrade requires no soldering. Includes a lightweight preamp with a belt clip, external volume controls, and a six-foot stereo cable. Ideal for players looking to cut through the mix in loud settings or provide warm support in acoustic genres, the Bass Master RB offers endless tonal possibilities, making it a must-have for serious bassists.   Technical Specs Wing: 22 mm diameter, 4 mm thick Fingerboard: 12.5 x 10mm, 0.7 mm thick Preamp: 3" x 3.5" x 1" Input Impedance: 1 MegOhm (each channel) Output Impedance: 10K Ohms Input: Stereo 1/4" | Output: Mono 1/4" Cable: 6 foot, 1/4" stereo plugs Power: 9 volt battery (not included)