The QSC K.2 series is a line of active loudspeakers designed for professional use in live sound reinforcement and installations. The series consists of three models: the K8.2, K10.2 and K12.2, each of which has a different size and power.

Each model features a 2-way, bi-amp design with a Class D amplifier, giving them high efficiency and low heat emissions. They also feature a custom 1.75-inch compression driver and a direct-radiating 12-inch woofer for balanced, reliable sound.

The speakers feature a rugged ABS enclosure with a steel grille, providing durability and resistance to knocks and bumps during transportation. They also feature a range of connections and controls including XLR inputs, RCA inputs and a mix output, developed a 2-band EQ, gain and volume controls.

One of the surprising features of the QSC K.2 series is the built-in DSP (Digital Signal Processing), which offers a range of advanced features including dynamic EQ, built-in crossover, speaker protection and much more. This makes it possible to adapt the loudspeakers to the acoustics of the room and the specific needs of the application.

Overall, the QSC K.2 Series offers powerful, reliable and durable active loudspeakers suitable for a wide range of applications in live sound reinforcement, installations and DJ use.