Bose Professional CSP-428 Commercial Sound Processor

For integrators who need fast, reliable commercial audio that performs consistently across venues, the Bose Professional CSP-428 commercial sound processor delivers predictable DSP, simplified setup and networked control. As a 1U rack-mount pro audio processor, the CSP-428 provides right-sized connectivity—2 x 2 balanced analog I/O, mono-summed RCA inputs and Bose AmpLink digital output—so you can minimize terminations and simplify amplifier connections. The onboard CSP configuration utility and rear-panel Ethernet let installers tune levels, routing and EQ in real time from a browser, cutting installation time and reducing on-site adjustments.

Bose proprietary features like Opti-Voice paging and SmartBass improve intelligibility for voice announcements and enrich music playback, making the CSP-428 ideal for hospitality, retail, restaurants and security-driven environments such as surveillance monitoring rooms and public-safety paging. AutoVolume (with AVM-1 microphone) automatically compensates for ambient noise, maintaining consistent zone levels across busy spaces. Backed by a 5-year limited warranty, the CSP-428 integrates with ControlCenter controllers and the ControlSpace Remote app for simple end-user operation. Specify the CSP-428 to streamline installs and deliver dependable audio performance—ideal for commercial AV, security audio and multi-zone monitoring applications.

• Speeds installations and reduces callbacks with an intuitive CSP configuration utility and browser-based UI that simplify routing, levels and EQ
• Ensures clear, intelligible paging and music with Opti-Voice paging, SmartBass and area EQs for consistent audio in hospitality, retail and security environments
• Maintains consistent zone volume automatically via AutoVolume when paired with the AVM-1 sense microphone, improving monitoring and background-music balance
• Simplifies wiring and increases reliability with Bose AmpLink digital output and rear-panel Ethernet for networked control and PC/Mac configuration
• Scales to real-world installs with right-sized I/O (2 x 2 balanced analog I/O, RCA inputs), 8 control inputs and rack-mount 1U form factor
• Delivers predictable performance and long-term support with Bose Professional DSP algorithms and a 5-year limited warranty