Designed for commercial and industrial use, the CSMA 180 Commercial Series Mixer/Amplifier from JBL is a mixer/amplifier with four mixer-channel inputs and one output channel. It's capable of reaching 80W of peak power with 10W per channel. The unit's front panel sports volume controls for each channel as well as a master volume adjustment knob, bass and treble controls, and a power switch. The volume controls are illuminated, so they can be seen and operated in darkened environments.

The amplifier, capable of driving both 8- and 4-ohm loads, can be used with 70V and 100V distributed audio systems without the need for a separate transformer. On its back panel you'll find the mic/line inputs, unbalanced RCA inputs, speaker connections, Hi-Z and phantom power switches, and more. The unit is also equipped with an RJ45 connector for use with JBL CSR-V in-wall volume controls (available separately).