1000 Watt 4-Channel Networking Amplifier with DSP Processing


The Asystems NT2504 Network Power Amplifier offers fixed installation contractors and integrators a streamlined, cost-effective solution for providing quality audio in multi-zone facilities. The NT2504 comprises four pristine input channels, multi-channel power amp and 40-bit signal processing. Internal signal processors include 10-band parametric EQs, limiters, crossovers and speaker delay compensation. Among the numerous essential audio processors available in the control software, Asystems engineers have thoughtfully included real-time power monitoring/management features that maintain consistent and controlled operating temperature to ensure system reliability for long-term peace of mind. Once you put an Asystems NT2504 in the rack, it stays in the rack.

Available as 70V or 100V constant-voltage amplifiers

The advantage of 70V or 100V constant-voltage output is the ability to string numerous speakers together in large facilities without having to design complex parallel connection schemes. Not only does continuous voltage allow the use of smaller gauge cable (which is easier to run and less expensive), these systems are easily expanded. Continuous voltage systems also allow easy remote volume adjustment, wherein a passive volume control can be installed to provide level control over a single speaker or a multiple-speaker zone. The NT2504 is available in 4 ohm low-impedance, 70V and 100V configurations.

250 Watts of power from each of the 4 speaker outputs (1000 Watts total)

For easy system integration, space savings, and cost cutting without compromise in quality, the 2U rack-mountable NT2504 features a multi-channel power amplifier that provides 250 watts to each of its four output channels. Asystems advanced power amplifier technology employs intelligent software control systems that constantly monitor temperature in real time to maintain optimal performance. Along with available options for low-impedance or line distribution applications, the NT2504’s powered output channels can operate in bridged-mono (2 outputs) for double the power output.

Optional Dante Connectivity

If you require more than eight channels or want to send signals over long distances, the NT2504 also offers 4x4-networking capabilities through the optional Dante networking card. Cutting-edge audio network technology from Audinate, Dante delivers uncompressed, low-latency, multi-channel digital audio to multiple locations over long distances. Dante-equipped NT2504 processors can send and receive eight channels of digital audio using a single Ethernet cable and can easily connect to other Dante-enabled devices. For flexible routing across multiple Dante-enabled units, connect your DMP808, DMP8800, NT or DMA systems to your local area network and control signals through the Audinate software.

Extensive Signal Processing with Windows Software

The Asystems NT2504 DSP network amplifiers stands apart from the competition with a precision 40-bit floating-point processor. With internal sampling rate set at 48kHz, signal-processing functions include 10-band parametric EQs, compressor, crossovers and output delay with adjustable temperature/parameters. Signal processors can easily be applied to each independent input and output mix through the Asystems NT2504 software. This software also features extensive matrix mixing features as well as detailed system monitoring (with real-time warnings) to ensure your NT2504 is performing well.

  • 4-channel amplifier – 250 watts per channel
  • 4 ohm and constant voltage models available (70V or 100V)
  • 4-in x 4-out sophisticated matrix mixing makes routing easy
  • Optional Dante networking (model no. DT44)
  • Internal sampling rate set at 48kHz
  • 24-bit A/D D/A conversion
  • Extensive internal signal processing
  • Remote user control through Asystems Windows software
  • Real-time error notifications via email reporting function
  • DSP Processing:
    • Automatic Mixing
    • Limiters
    • 10-band EQs
    • 2- and 3-way Crossovers
    • Output Delay
  • Password protected user accounts
Front Panel

The front panel controls of the NT2504 include a power switch and four rotary gain controls for each channel, while the model also includes LED level indicators at -40dB, -6dB and -3dB, clip/protect and bridge (one per two-channel group). The master section features LEDs for power, switch disable, standby/unlock and protection.

Rear Panel

Low Z, Stereo Mode, all channels driven (RMS Power Ouput Per Channel)
8Ω, 20Hz-20kHz 1%THD 150W
4Ω, 20Hz-20kHz 1%THD 250W
Low Z, Bridge Mode, all channels driven (RMS Power Output)
8Ω, 20Hz-20kHz 1%THD 500W
Distributed Output (RMS Power Output Per Channel)
70V, 100V, 20Hz-20kHz 1%THD 250W
Models Available 4Ω and 8Ω / 70.7V Constant Voltage / 100V Constant Voltage
Please consult your sales assistant for information on ordering the model that is best for you
System Amp Circuitry D
Input Sensitivity 1.42 Vrms
Distortion (SMPTE-IM) <0.02%
Noise (Unweighted 20 Hz – 20 kHz below rated power) 107 dB
Damping Factor >300 @ 8Ω
Frequency Response 20 Hz-20kHz +-1dB; -3dB: 5Hz-50kHz
Input Impedance 20 kΩ balanced; 10 kΩ Unbalanced
Cooling Variable Speed Fans – front to rear flow
Indicators -40dB,-6dB, -3dB, Clip/Protect, Bridge (one per two-channel group), Power, Disable, Standby/Unlock, Protect
Front Panel AC power switch & gain control
Control Operation Mode Stereo / Bridge Mono
Voltage Gain 40 x (32 dB)
Network Control Built-in Ethernet, 10/100 Mbit/s
Connections Input (Line-level) 4 x 3-pin Euroblock Connectors
Output (Powered) 4 x 2-pin Euroblock Connectors
Protection Circuitry Amplifier Protection Totally Short / Open / Overheat / VLF / RF protection / Mismatched loads stabilize the transition
Load Protection On / Off squelch / AC coupling / Triac crowbar (each channel)
Power Supply Power Consumption 375W
Power Requirements (Region Dependent) 100 – 120VAC, 220 – 240VAC, 50/60Hz

User’s Manual (English / Español): um_NT_series_en_es

Data Sheet (English): ds_NT2508_2504_1308_1304_en