ZA400 Power Amplifier



The amplifier shall be a Four channel all steel unit 2 standard rack units high, 19" (482mm) wide and 16" (425mm) deep with front and rear rack mounting points.

Input connectors shall be Balanced TRS Jacks, wired  Tip + Hot, Ring - Cold, Sleeve Audio Ground. Input connectors shall be normalled 1 through 4.

Output connectors shall be Neutrik Speakon, wired as follows: Connector 1/ Channel 1 (1+, 1-), Channel 2 (2+, 2-), Connector 2/ Channel 3 (1+, 1-), Channel 4 (2+, 2-).
Additionally, each pair of speaker outputs shall be capable of running as a single bridged mono output by pressing in a switch on the rear panel
Level controls shall be mounted on the rear panel as standard, and optionally mounted on the front panel

Input Impedance shall be 40 Kohms Balanced, with a CMRR of >70dB @ 1 KHz.
The Input CMRR @ 1KHz shall be greater than 70dB, and the Channel Separation @ 1KHz shall be -88dB. Frequency response @ rated output shall be 20Hz - 20KHz ±0.4dB.
Distortion shall be 0.027% @1KHz 8 ohms.

The Slew Rate shall be 35VuS and the Damping Factor shall be 200:1.
There shall be LED status indicators for Signal present and Protection functions. Protection features shall consist of headroom enhancing soft limit circuitry, 2 x fans, DC sensing, and Input/Output muting at turn on and turn off.

The Output power of each channel shall be 180 watts RMS into an 8 ohm load. 
AC Power shall be supplied 'zone-specific' at 100/120/220/240V AC on a removable power lead.

The amplifier shall be the ARX ZA400.