The NXAMP concept goes far beyond a simple "amplifier + speaker controller" bundle. Significant advances in DSP allow for the deployment of multiple sensor lines to simultaneously protect the amplifier and the speakers connected to it. In addition, the NXAMP4x4 utilizes a unique dual power cord, providing power supplies with nearly double the power of most current audio amplifiers, while maintaining an extremely easy connection to the mains, either single or multi-phase. To absorb this enormous current, the NXAMP4x4 incorporates 4 high-powered resonant power supplies, working in opposite phase, which helps to cancel out background noise and reduce EMC emissions.

The design of the NXAMP4x4 uses specific advanced components: this ultimate evolution of Yamaha EEEngine technology ensures the sonic purity of conventional Class AB, but with typical Class D heat dissipation. Not only do the two dual-core DSPs provide protection and optimization of the amplifier, but they also redefine the standard of speaker processing for NEXO models, with proprietary algorithms that combine sonic performance and reliability.

With useful features such as full access to all functions without a computer via the front panel, on-the-fly speaker model selection per output, or load tracking via GPIO or Ethersound™/AES/EBU/Dante™ network to ensure system security, the NXAMP4x4 is ideal in a wide variety of demanding applications.
Key Features

Ultra-flexible 4-channel digital amplification and processing solution, perfect match with any NEXO loudspeaker
Among the most powerful amplifiers available on the market
Affordably integrates control, monitoring, protection and amplification for all NEXO speaker systems
Lighter and less bulky than conventional "amplifier + processor" systems
Eliminates unnecessary A/D/A conversions
Optional Dante™, EtherSound™ or AES/EBU network cards

Specifications
Number of channels 4 amplifier channels, bridgeable 2 by 2
Maximum output voltage (no load) 4x 200 Volts
Maximum output power (4-channel mode, 8 ohm load per channel) 4x 1900 Watts
Maximum output power (4-channel mode, 4 ohm load per channel) 4x 3300 Watts
Maximum output power (4-channel mode, 2 ohm load per channel) 4x 4000 Watts
Maximum power output (2-channel mode, 8 ohm load per channel) 2x 6800 Watts
Maximum output power (2-channel mode, 4 ohm load per channel) 2x 8000 Watts
Power consumption (standby) 20 Watts
Power consumption (idle) 120 Watts
Frequency response 10 Hz - 20 kHz (+0.5 dB)
Impedance / Maximum input level 20 KΩ / +28 dBU
Dynamic range / TDH + N 105 dB (unweighted) / Typ. 0,1% in Flat configuration
Latency 500 µs in Flat configuration
Audio A / N conversion and current/voltage tracking lines: 24 bits / 48 kHz
Digital processing 2 dual-core DSPs, working in 24 bit fixed point, 56 bit accumulator
Features
Analog audio inputs 4 x balanced analog inputs on 3-pin XLR, with return on 3-pin XLR seconds
Speaker outputs 4 x outputs on Neutrik Speakon NL-4 connector
RS232 port 1 x 9-pin Sub-D connector for firmware upgrade and accessory connection
GPIO port 1 x 25-pin Sub-D connector for 5 x Global Purpose Inputs and 8 x Global Purpose Outputs
Expansion slot For audio network cards, 4 x digital audio inputs and remote control
2 x Neutrik PowerCon NAC3 (2x 16 A) or NAC3-HC (2x 32 A) power sockets, depending on model
Front panel buttons and knobs On/Off switch, selector wheel, 2 x Menu buttons, 4 x Select buttons and 4 x Mute buttons
LCE display, 2 lines of 40 characters, LED backlighting
LED status indicators Power, Standby and Amp Protect
Speaker/amp operation indicators Per channel: output current monitoring, speaker protection and amp clipping
Dimensions 4 U 19" rack - depth 457 mm
Net weight 24.5 Kg (49 lbs)
Electrical safety certification cULus, CB (CE)
EMC certification CE, FCC
Environmental protection ROHS compliant

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