Extron has announced the availability of the Extron NetPA 502 AT and NetPA 1001‑70V AT, half rack 1U, convection cooled power amplifiers equipped with Dante digital audio networking. The NetPA 502 AT delivers two channels of 50 watts into 4 ohms, and the NetPA 1001‑70V AT provides a single channel of 100 watts at 70 volts. NetPA amplifiers receive audio from Dante-enabled devices over a standard local area network, allowing for decentralized distribution of audio throughout a building. In addition to amplifying incoming Dante audio, NetPA amplifiers feature line level outputs that can simultaneously feed an additional speaker zone or audio system. They feature an advanced Class D amplifier design, plus patented CDRS – Class D Ripple Suppression that they say provides improved signal fidelity over conventional Class D amplifiers.
The NetPA 502 AT and NetPA 1001-70V AT are professional grade amplifiers, featuring greater than 90 dB signal-to-noise ratio and less than 0.1 percent THD+N. The amplifiers have recessed, detented level controls located on the rear panel that facilitate adjustment of audio system gain structure, or setting an individual level for each zone. They also have an ultra low inrush current draw to prevent power circuit overload that occurs when multiple amplifiers are switched on simultaneously. This feature eliminates the need for power sequencing in systems with multiple amplifiers in large centralized equipment racks, and prevents other equipment from experiencing power interruption from associated power surges.
A network of Extron Dante-enabled products, including the NetPA amplifiers, can be set up using Dante Controller software as well as DSP Configurator Software. Dante Controller is used to easily assign an output from a Dante-equipped digital signal processor, such as the Extron DMP 128 AT, to an input on a NetPA amplifier.