Powered by a 9V battery, the Fishman Model B is a simple outboard active preamp that offers up to 9 dB of gain and a two-band EQ, specially for bass and low-end frequencies.
This Model B was made in the early 1990s. It shows some scuffs and signs of use, but it functions 100% as it should. It is missing the belt clip, one screw, and the washer for the input 1/4" jack. It's a simple, easy-to-use tone-shaping device.