The Lab.Gruppen C 28:4 is a high-performance four-channel amplifier designed for demanding professional audio applications in touring and fixed installations. It delivers robust power with a focus on reliability and sonic fidelity, making it suitable for driving a wide range of loudspeaker systems from full-range cabinets to dedicated monitor wedges and subwoofers. The amplifier utilizes Lab.Gruppen's advanced amplifier technology to provide efficient, clean power with low distortion, ensuring accurate sound reproduction at high output levels across all four channels.

Engineered for system integration, the C 28:4 includes comprehensive signal processing and routing capabilities accessible via the optional Lake Controller software. This allows for detailed configuration of input and output parameters, including crossover filters, delay, equalization, and limiting tailored to the specific loudspeakers in use. The amplifier supports both analog and digital (AES3) inputs, offering flexibility in system design and connectivity within modern audio infrastructures.

Housed in a robust 2U rackmount chassis, the amplifier features intelligent thermal management with variable-speed cooling to maintain optimal operating temperatures. It incorporates extensive protection circuitry against overloads, shorts, and DC faults to safeguard both the amplifier and connected loudspeakers. With its combination of substantial power, advanced processing, and rugged construction, the C 28:4 serves as a versatile and dependable power solution for professional sound reinforcement.