Studiomaster nEX4-1800 AES67 Networked 4-Channel Power Amplifier

Studiomaster nEX4-1800 AES67 Networked 4-Channel Power Amplifier

The Studiomaster nEX4-1800 power amplifier supplies four channels at 450W each into 8 ohms or 675W each into 4 ohms, with two 1350W bridged outputs available at 8 ohms. It combines AES67 audio-over-IP networking, Ethernet monitoring, built-in digital signal processing, and a compact 1U steel rack chassis.

Designed for installed sound, live entertainment, touring, rental, and commercial audio, the nEX4-1800 suits systems requiring independent amplification for several speaker zones. It works as a four-channel amplifier for installed sound, an AES67 power amplifier for networked audio, or a lightweight 1U amplifier for touring racks.

Balanced XLR inputs and 4-pole speaker outputs support professional integration, while stereo, parallel or mono, and bridged modes accommodate different loudspeaker layouts. A front-panel color LCD provides access to onboard DSP settings including 7-band parametric EQ, delay, crossover filtering, compression, and limiting. Comprehensive DC, short-circuit, thermal, under-voltage, overload, and output protection helps safeguard connected equipment.

Key Features

• Four-Channel Amplification: Delivers 4 x 450W at 8 ohms for multi-zone and distributed speaker systems.
• Higher 4-Ohm Output: Produces 4 x 675W when connected to compatible 4-ohm loudspeaker loads.
• Bridged Operation: Provides 2 x 1350W at 8 ohms for applications requiring greater output per speaker circuit.
• AES67 Networking: Connects to compatible audio-over-IP systems for network-based signal distribution.
• Ethernet Monitoring: Supports amplifier monitoring through a LAN connection and compatible control software.
• Built-In DSP: Per-channel parametric EQ, delay, crossover filters, compressor, limiter, and feedback suppression with front-panel display access.
• Automatic Standby: Enters standby when no signal is present to reduce unnecessary idle operation.
• 1U Steel Enclosure: Fits standard 19-inch equipment racks while conserving vertical rack space.

Technical Specifications

• Brand: Studiomaster
• Model: nEX4-1800
• Product Type: Networked four-channel power amplifier
• Network Audio Compatibility: AES67
• Output Channels: 4
• Rated Output at 8 Ohms: 4 x 450W
• Rated Output at 4 Ohms: 4 x 675W
• Bridged Output at 8 Ohms: 2 x 1350W
• RMS Output Voltage: 60V at 1% THD and 1kHz
• Operating Modes: Stereo, parallel or mono, and bridged
• Distortion and Noise: Typically 0.05% at 10% rated output, 1kHz, and 8 ohms
• Crosstalk Suppression: At least 75 dB below rated power from 20Hz to 1kHz at 8 ohms
• Frequency Response: Typically +/-0.5 dB from 20Hz to 20kHz at 10% rated output and 8 ohms
• Input Impedance: 20 kilohms balanced and 10 kilohms unbalanced
• Signal-to-Noise Ratio: At least 100 dB, A-weighted, from 20Hz to 20kHz at 8 ohms
• Audio Inputs: Balanced XLR
• Speaker Outputs: Industry-standard 4-pole speaker connectors
• Network Connection: Ethernet/LAN (RJ45)
• Display: Front-panel color LCD with rotary push encoder
• Protection: DC, short-circuit, thermal, under-voltage, overload, and output DC protection
• Power Requirements: 100 to 240 VAC, +/-10%, 50/60Hz
• Enclosure: Steel 1U rackmount chassis
• Dimensions: 19 x 1.8 x 11.8 inches (W x H x D)
• Weight: Approximately 12 pounds

What's Included

• Studiomaster nEX4-1800 Power Amplifier
• Power Cord
• 4-Pole Speaker Connector
• Owner's Manual