QSC power amps span two-, four-, and eight-channel configurations, with output ranging from 60 W per channel in compact network models to 500 W per channel in professional stereo models, while higher-power network amplifiers support totals up to 8,000 W. Depending on the series, they support 4- or 8-ohm Low-Z loads, 70 V or 100 V direct-drive systems, or selectable Low-Z and High-Z operation, and some models offer bridged outputs or flexible power distribution across channels.

Low-impedance operation drives speakers rated at loads such as 4 or 8 ohms and suits many direct-connected speaker systems, including sound reinforcement setups. Seventy- or 100-volt operation uses a constant-voltage distribution system for connecting multiple speakers over longer cable runs, with each speaker typically set to an appropriate power tap.

Networked power amps connect to audio control and monitoring systems through standard gigabit Ethernet, allowing audio transport, configuration, control, and status monitoring over the network. Many models also provide microphone or line inputs, software-defined inputs and outputs, and general-purpose input/output connections for integrating local sources, sensors, and control devices.

Review the available rack space, channel count, power needs, speaker impedance, and whether the system uses low-Z, 70 V, or 100 V distribution for commercial, residential, or paging applications. Also consider network control, mic or line inputs, highpass filtering, cooling method, energy-saving features, and mounting options such as half-rack or 1U designs.