Mastiff KM312 - 3 x 12" self-powered, high power stage monitor

Features and Information

Ultra-low distortion
Asymmetrical 100° by 30° horn
Strong stainless steel grill
Sturdy birch wood chassis


The larger model of the Mastiff line, the active Mastiff-KM312, features 3 x 12 woofers and produces a maximum SPL output at 136 dB (peak). The Mastiff-KM312 is ideal for touring, concerts, music festivals and live events in large venues.

With an incredibly strong stainless steel grill and sturdy birch wood chassis, the Mastiff-KM312P monitor is built to withstand any onstage abuse that may incur from performers.

The monitor features an asymmetrical 100° by 30° horn granting performers the possibility to select a wide or narrow sound emission.

mastiff km312 horn

The Mastiff-KM312, the active model, and the Mastiff-KM312P, the passive version, are extremely fierce with unquestionable clarity.


Customer Applications

The various ways this product have been implemented by people who chose it

Broadcast & Studios


Large congregations




Theatres | Concert halls


Theme Parks


Touring | Concerts | Festivals | Live events




Support & Download

Download the manual and supporting tools for the product