JBL Professional CSM 28 8-Input, 2-Output Commercial Audio Mixer, 1U Full-Rack

The JBL NCSM28-U-US is a commercial audio mixer that offers eight inputs and two outputs, giving you straightforward control over microphones, music sources, and paging systems in one rack-mountable unit. Designed for restaurants, retail stores, fitness studios, schools, and other venues that need dependable background music and clear announcements, it provides the essential tools to keep sound consistent throughout the day.

Each output features separate bass and treble controls so you can fine-tune the tone to match the room’s acoustics without reaching for external processors. A priority-mute function automatically lowers background audio when announcements or emergency pages need to come through, ensuring important messages are never missed.

The mixer sits in a single 1U rack space and runs silently thanks to its fan-free design, making it easy to integrate into equipment closets or front-of-house racks without adding noise. Installation is equally straightforward: Euro-block connectors handle balanced lines, while unbalanced RCA inputs accommodate common music players. A universal 100–240 V power supply eliminates the need for step-down transformers when installing in different regions.

For everyday convenience, the CSM 28 links to optional JBL CSR V wall controllers over a standard Ethernet cable, letting staff adjust volume from the dining area, sales floor, or studio without reaching the rack. Whether you are outfitting a new location or upgrading an existing system, this mixer delivers the flexibility, reliability, and ease of use that commercial environments demand.

Highlights:

• Eight inputs and two outputs handle microphones, music players, and paging sources with room to expand
• Occupies one rack unit and operates without a cooling fan for quiet, space-saving installation
• Independent bass and treble controls on each output simplify in-room sound shaping
• Compatible with JBL CSR V wall controllers via standard Ethernet cable for remote volume adjustment
• Priority-mute function ensures announcements override background music when necessary
• Universal 100–240 V power supply supports global installations without external adapters
• Euro-block and RCA connectors provide quick, reliable terminations for permanent wiring