Midas DL431 - 24-Input/72-Output Active Microphone Splitter with Independent Midas Microphone Preamplifiers in Blue Finish

The Midas DL431 is a state-of-the-art 24-input/72-output active microphone splitter, designed for professional audio systems requiring high-quality signal distribution and splitting. It is a 6U 19" fixed-configuration rackmount unit that combines superior sound performance with robust, reliable features to meet the demands of live sound environments. The DL431 features three independent Midas microphone preamplifiers per channel, ensuring unparalleled sound clarity, warmth, and depth. The microphone preamplifiers feature 2.5 dB gain steps, switchable +48V phantom power, and are designed to handle the most demanding live sound applications. The system's transparent and low-noise design ensures that every subtle detail of the performance is faithfully captured, making it a go-to choice for professional engineers.

Each input on the DL431 is equipped with three separate Midas microphone preamplifiers, two of which are variable gain and can be remotely controlled for precise adjustments at Front of House or Monitor mix positions. The third microphone preamplifier provides fixed gain and drives a transformer-balanced analogue output, which is ideal for interfacing with third-party recording or broadcast equipment. This setup allows the DL431 to provide dual redundant AES50 digital outputs, ensuring that digital audio is transmitted without disruption, even in the event of a failure. The AES50 technology offers high channel counts, ultra-low latency, and sample-synchronous, phase-aligned networked clock distribution, ensuring robust performance in demanding environments.

In addition to its digital outputs, the DL431 provides an analogue monitoring system with a local channel monitoring facility, complete with an integrated headphone amplifier and line output. This feature is crucial for system setup, signal integrity verification, and providing real-time audio feedback during sound checks or live performance. The DL431's intuitive front panel LCD display provides easy access to all configuration options, with clear LED indicators showing operational status, power supply conditions, and AES50 or Ethernet network connection statuses. The front panel also includes channel-level metering for gain monitoring, high-pass filter status, and phantom power indicators, allowing engineers to manage all aspects of the system's performance quickly and effectively.

The unit is housed in a rugged 6U rackmount chassis designed to withstand the demands of live touring. Premium Neutrik connectors are used for audio and network connections, ensuring long-term reliability and signal integrity. The DL431 features dual-redundant power supplies, providing seamless switchover if one power supply fails, which is essential for critical live sound applications. The auto-ranging universal switch-mode power supply supports global voltages from 100V to 240V, making it a versatile solution for international tours.

With its combination of advanced features, legendary Midas sound, and unparalleled reliability, the Midas DL431 is an essential tool for any live sound engineer or system designer who requires high-quality microphone splitting and distribution in demanding environments.

Features

• 24-input active microphone splitter with 2 electronically balanced and 1 transformer-balanced output per input channel
• 3 independent Midas microphone preamplifiers per input channel, offering switchable +48V phantom power and remote gain control
• Two independent dual-redundant AES50 (X and Y) network ports for high-channel-count, low-latency digital audio transmission
• Local channel monitoring with integrated headphone amplifier and separate line output for real-time audio feedback
• 24-bit, 96 kHz audio operation with 128-times over-sampling A/D converters for superior audio quality
• Remote operation up to 80 meters via CAT5/5e cable for convenient setup and control from FOH or monitor mix positions
• All configuration settings programmable from front panel controls or remote console
• PSU status indicator LEDs and configuration LCD display on the front panel for easy monitoring of operational status
• Neutrik etherCON AES50 network ports for secure, reliable, and high-performance audio and network connections
• Rugged 6U rackmount chassis for durability in portable applications
• Dual-redundant auto-ranging universal switch-mode power supplies for seamless power backup
• Power consumption: 150 W
• Voltage: 100V to 240V AC, 50-60Hz
• Operating temperature range: +5°C to +40°C
• Storage temperature range: -20°C to +60°C
• Dimensions: 10.5 x 16.14 inches deep
• Net weight: 47.3 lbs

Specifications

Analogue Inputs

• Connector: 3-pin XLR balanced
• Phantom power: 48-volt with local switch and remote control from XL8 control centre
• Gain control A: -2.5dB to +45dB analogue gain in 2.5dB steps with local and remote control; plus a further +20dB of hi resolution interpolated DSP trim
• Gain control B: Independent second channel identical to above
• Filter A: 30Hz high pass with local defeat switch and remote control from XL8 control centre
• Filter B: Independent second channel identical to above
• Meter (24-off): 7-segment, -18dBu to +24dBu
• Meter A/B: Meters can be switched to monitor A or B pre-amplifiers
• A/D converter A: 24-bit, 96k and 128 times over sampling
• A/D converter B: Independent second channel identical to above

Analogue Outputs

• Connector A: 3-pin XLR balanced
• Connector B: Independent second channel identical to above
• Connector C: Independent third channel on front-mounted 3-pin XLR, balanced and transformer isolated (with fixed gain of -6dB)
• Headphone connector: 1/4" jack
• Audio monitor: 3-pin XLR balanced

Digital (system) Outputs

• System connector A: AES50 (24 channels of digital audio) on Ethercon XLR
• System connector B: Independent second channel identical to above
• Duplicate connector A: AES50 (24 channels of digital audio) on Ethercon XLR providing dual redundant back up of A channels
• Duplicate connector B: AES50 (24 channels of digital audio) on Ethercon XLR providing dual redundant back up of B channels

Physical

• Dimensions: 10.5 x 16.14 inches deep
• Net weight: 47.3 lbs
• Power requirements: 100V to 240V, 50 to 60Hz
• Operating temperature range: +5°C to +40°C
• Storage temperature range: -20°C to +60°C