Studiomaster NEX4-1200 AES67 Networked 4-Channel Power Amplifier

Studiomaster NEX4-1200 AES67 Networked 4-Channel Power Amplifier

The Studiomaster NEX4-1200 power amplifier supplies four channels at 300W each into 8 ohms or 450W each into 4 ohms, with two 900W 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 NEX4-1200 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 2.2-inch color LCD provides access to onboard DSP settings. Auto-standby reduces idle operation, while limiting, DC, short-circuit, thermal, under-voltage, overload, and output protection help safeguard connected equipment.

Key Features

• Four-Channel Amplification: Delivers 4 x 300W at 8 ohms for multi-zone and distributed speaker systems.
• Higher 4-Ohm Output: Produces 4 x 450W when connected to compatible 4-ohm loudspeaker loads.
• Bridged Operation: Provides 2 x 900W 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 Access: Uses a 2.2-inch color LCD to navigate available signal-processing settings.
• 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: NEX4-1200
• Product Type: Networked four-channel power amplifier
• Network Audio Compatibility: AES67
• Output Channels: 4
• Rated Output at 8 Ohms: 4 x 300W
• Rated Output at 4 Ohms: 4 x 450W
• Bridged Output at 8 Ohms: 2 x 900W
• Rated Output Test Conditions: 1% THD, continuous 1kHz sine wave, all channels operating simultaneously
• RMS Output Voltage: 49V at 1% THD and 1kHz
• Operating Modes: Stereo, parallel or mono, and bridged
• Input Sensitivity and Gain: 0.5 to 2 Vrms selectable at rated output, 1kHz, and 8 ohms
• 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
• Damping Coefficient: Typically 1000 from 20Hz to 200Hz at 8 ohms
• 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
• Display: 2.2-inch color LCD
• Signal Processing: Built-in DSP with front-panel display access
• Standby Function: Automatic standby when no input signal is present
• Output Limiting: Built-in limiter designed to prevent output clipping
• Protection: DC, short-circuit, thermal, under-voltage, overheating, 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: 11.5 pounds