Bose Professional PowerShare PS404D Adaptable 400W Power Amplifier

The Bose 813375-1310 is an amplifier that supplies up to 400 watts and lets you direct that power to any of its four output channels as your system demands. Instead of assigning a fixed wattage to each line, the PowerShare architecture moves wattage where it is required, so a quiet lobby, a busy restaurant zone, and a presentation space can all draw exactly the power they need from one rack unit.

Because each channel can operate at 70 V, 100 V, or 4/8 Ohm, you can mix high-impedance distributed loudspeakers with low-impedance point-source boxes without adding external transformers, bridging, or jumpers. Integrators who handle hotels, schools, houses of worship, or retail floors will appreciate how quickly a single PS404D covers multiple loudspeaker types and zone sizes.

The onboard digital signal processing provides equalization, crossovers, and limiting, all adjustable in ControlSpace Designer software. That means a technician can fine-tune a paging mic, tighten a subwoofer crossover, or protect an installed ceiling array—all from a laptop—before locking the settings for everyday use.

Dante audio networking is built in, so you can put the amplifier close to the loudspeakers and run a single network cable back to the rack, cutting copper costs and reducing audible noise pickup on long analog runs. If a venue grows, you can add more Dante-enabled devices and route audio with simple network commands instead of rewiring.

Installation is straightforward: the chassis fits a standard 1U rack space and measures only 1.7 inches tall, leaving plenty of room for other gear. Thermal, overvoltage, and short-circuit protection guard the system, while an automatic standby mode lowers power draw during off-hours, an advantage for corporate conference rooms and venues with strict energy guidelines.

• 400 watts available across four channels, shared dynamically through PowerShare technology
• Selectable 70 V, 100 V, or 4/8 Ohm operation on every channel without external bridging
• Dante audio networking for simplified cabling and flexible signal routing
• Integrated DSP offering EQ, crossover, and limiting adjustments via ControlSpace Designer software
• Chassis that occupies one rack unit and stands only 1.7 inches tall for space-efficient installs
• Protection against thermal overload, overvoltage, and short circuits to ensure reliable operation
• Auto-standby function that reduces energy consumption when the system is idle