The Mastiff line of stage monitors from K-array have been designed to give performers a choice of coverage pattern on stage thanks to their asymmetrical 100° by 30° horn. The larger models of the Mastiff line, the KM312 and the KM312P, feature three 12-inch woofers and produce a maximum SPL output of 136dB (peak). The Mastiff KM312 is the active model while the Mastiff KM312P is passive.
The smaller Mastiff KM112 and Mastiff KM112P offer a coaxial 12-inch woofer and reach a maximum SPL of 133dB (peak). According to the Italian manufacturer, the self-powered KM112 has a power output capable of driving the KM112P passive version, which in turn can drive a stereo mix, as well as a Thunder KMT18P for a drum fill.
The four-member family of powered and passive monitors offer a birch chassis and stainless steel grille.