This perennial favorite features a tough injection-molded case with an easy access battery compartment, input trim control and advanced new electronics which provide longer battery life. Features include Volume, Bass, Middle, Treble and Brilliance sliders along with an AC adapter jack, phase switch and sub-bass trim control. This preamp can be utilized with a piezo or magnetic pickup. FEATURES: Volume, Bass, Middle, Treble and Brilliance sliders Phase switch Sub-bass trim control Input trim control Advanced electronics provide longer battery life Features a tough injection molded case Easy access battery compartment AC adapter jack Can be utilized with a piezo or magnetic pickup