Description
The SF-NP35E is a PoE++ enabled network audio power amplifier that converts one Dante channel to a mono constant-voltage speaker output. It delivers 35 watts RMS into 70 V or 100 V distributed speaker systems and requires no special configuration software. The unit supports Dante sample rates up to 96 kHz for clean, low-latency network audio distribution.
Key features include built-in PoE++ powering or optional 24 Vdc external supply, an internal VCA for level control, and Class D amplification for high efficiency. The SF-NP35E provides selectable Dante sample rates of 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz and maintains 0 dBFS reference equal to 35 W output. The amplifier also includes thermal and short-circuit protection to protect connected speakers and the amplifier itself.
Performance specifications emphasize audio clarity and reliability – frequency response is +0/-3 dB from 50 Hz to 20 kHz, THD+N is under 1% at 1 kHz, and noise floors are below -90 dB at maximum power. The module monitors supply current and automatically limits draw to prevent PoE++ port shutdowns during extreme conditions. Front and rear panel LEDs provide network sync, mute status, port-protect alerts, and Ethernet link/speed indication.
Connectivity is simple via a single RJ45 Dante network connection and a detachable terminal block for the 70 V or 100 V speaker output and VCA control wiring. The VCA accepts a 10 kOhm potentiometer or 0 to 10 Vdc control input and is compatible with RDL wall-mounted remote level controls. No software is required to put the module onto a Dante network when used with standard Dante management tools.
Typical applications include background music and paging systems in retail, hospitality, education, and corporate environments where networked audio and constant-voltage distribution are required. The SF-NP35E fits into centralized Dante audio deployments where distributed amplification reduces long speaker runs and simplifies zoning. Its PoE++ capability simplifies installations by allowing both data and power over a single cable when supported by the network switch.
The SF-NP35E is housed in an all-metal enclosure suitable for surface, rack, or free-standing mounting and is plenum rated to UL 2043. Installation is straightforward with detachable terminal blocks and standard RJ45 network cabling. The robust build, combined with VCA control and protective monitoring, provides a reliable, installer-friendly solution for networked constant-voltage audio systems.