A feature of the ZR series is an internal insert point for ARX Plug-in crossover modules.

The EC PlugIn is an Electronic crossover ‘on-a-card. Using the seamless 24dB Linkwitz-Riley filter circuitry incorporated in our EC-2 Active crossovers, EC PlugIns are available in a variety of Preset or user-configurable versions.

Safety First
In keeping with current safety practices, the outputs are all fully isolated Speakon connectors.

For added convenience, there is a separate connector for bridged mono mode.

Excellent Power-to-weight ratio
Advanced computer modelling of the ZR series chassis design has put strength where it’s needed, and reduced excess weight where possible. Coupling this with the use of compact toroidal transformers has resulted in an excellent power-to-weight ratio for the ZR series.

Comprehensive Protection circuitry onboard
Over the years ARX engineers have done intensive research into amplifier protection systems. Our new ‘Headroom Enhance’ circuitry is based on the core ISC error correction technology developed by ARX for our new range of ISC Loudspeaker Processors. This provides Maximum power output levels under all AC mains supply voltages and rated load conditions, eliminating Output Stage clipping.
The ZR series amplifiers have new re-settable High Current relay switched protection circuits that instantly disconnect the speakers when a potentially damaging signal or amplifier error is detected.
New 'SilentStart/SilentStop' input delay muting circuitry eliminates switch on/switch off noise.

Cooling

The super-efficient Heavy Duty heatsink features fin spacing at a slightly larger fin-to-airspace ratio, to maximise air flow and to minimise risk of dust buildup should the foam filters become displaced or lost. This is complemented by the use of two variable speed DC fans. In all models, the speed of these fans is temperature controlled, so that when the amp is idling, so are the fans. When the internal temperature rises, so does the fan speed.

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Built to Last
Over 24 years ago, ARX was one of the first companies in the world to bring out a high powered amplifier, the legendary SS700 in only 2 rack spaces! A concept that has been embraced by virtually every amp manufacturer since then. Today, thousands of amplifiers later, we’ve probably had greater experience in getting more from less than just about anyone else!
As a company, ARX is dedicated to producing pro audio products that consistently deliver the power and the quality that audio professionals expect.
The ZR series is proof of our commitment - a line of amplifiers that work as hard as you do, day after day, night after night.