A single Planar Wave System does the job that would otherwise take several microphones and a multi-channel mixer to achieve. Better yet, it attaches easily to either side of the soundboard without holes to drill or tools. Features include active direct box which includes a 9-volt battery or phantom power, 1/4" monitor output with variable level, balanced, XLR main out with ground life and output pad switch (0db/-12db). Includes piezo crystal for piano/harp, 4000XL Piezo preamp, adhesive patches, set of 4 rubber feet and instruction guide. Ideal for: Cimbalom, Clavicord, Harp, Concert Harpsicord and Piano.