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4x4 XLR Audio Bridge with Dante® and PoE

VLDT-XL44DB

  • 4x4 Dante audio bridge with XLR/TRS inputs and XLR outputs

  • Integrated DSP with gain, 8-band PEQ, and delay control

  • Dual Dante network support with redundancy and dual PoE+ for mission-critical applications

  • Standard 1U 19" rack-mount form factor for professional installations

Where to Buy

Product Description

The VLDT-XL44DB is a Dante®-enabled 4x4 audio bridge that converts analog audio signals to and from the Dante® network standard. Built on the DEP (Dante Embedded Platform) architecture, this unit handles up to 4 analog inputs and 4 analog outputs. The analog inputs utilize XLR/TRS combo jacks supporting both balanced and unbalanced connections, with 48V phantom power and 6-level sensitivity adjustment available. Analog outputs offer 5-level gain control for precise signal management.

Integrated DSP provides comprehensive audio processing including gain control, equalization, and delay adjustments. Configuration is straightforward through either the built-in web GUI or standard Dante® Controller software.

The unit supports both primary and secondary Dante® networks for enhanced redundancy and reliability. Power options include PoE (Power over Ethernet) or local DC supply, providing flexible installation choices. This cost-effective 1U rack-mountable unit delivers an efficient solution for professional AV installations, integrating seamlessly with diverse audio equipment while dramatically reducing system cabling complexity.

Key Features

  • 4x balanced analog inputs on XLR, supporting XLR/TRS combo connection

  • 4x balanced analog outputs on XLR

  • Dante® 4x4 and AES67 audio input/output supported

  • Supports balanced/unbalanced analog audio input and output

  • 2x RJ45 Dante® connectors with redundancy and dual PoE+, supporting Dante® primary and backup networks

  • Each input supports +48V phantom power

  • Adjustable global 0dBFS line up selection: (6-level input sensitivity adjustment: -35dBV/-18dBV/0dBV/+4dBu/+14dBu/+24dBu; 5-level output adjustment: +20dBu/+14dBu/+4dBu/0dBV/-18dBV)

  • Built-in audio DSP processing for sensitivity, gain, 8-band PEQ and delay control

  • Audio input and output support 8 band PEQ adjustment (with +15dB/-15dB gain), and a maximum of 50ms delay setting

  • Dante® audio supports: 44.1kHz, 48kHz, 88.2kHz, and 96kHz sampling rates @ 16/24bit

  • Dante® audio delay supports settings of 2, 3, 4, 5, 10ms

  • Configuration using internal Web GUI or Dante® Controller

  • Powered by PoE+ or local DC power supply

  • Standard 1U 19” rack-mount form factor

Downloads

VLDT-XL44DB DATA SHEET (PDF)
VLDT-XL44DB USER MANUAL (PDF)

Ideal Applications

Large-Scale Corporate AV Systems

Ideal for enterprise conference centers, boardrooms, and multi-purpose spaces requiring multiple microphone inputs and zone outputs. Connect up to four wireless microphone receivers, podium mics, or ceiling microphones to your Dante® network infrastructure, routing audio to DSPs, recording systems, and multiple room zones simultaneously. The dual PoE+ power on both network ports ensures uninterrupted operation even if one power source fails, critical for high-stakes presentations and video conferences where audio reliability is non-negotiable.

Live Performance & Entertainment Venues

Essential for theaters, concert halls, and performance spaces where multiple analog sources need reliable Dante® network integration. Bridge four stage microphones, instrument preamps, or wireless systems to your digital mixing console and monitor system over standard network cabling. The enhanced 105dB dynamic range handles the full audio spectrum from whisper-quiet dialogue to powerful musical performances, while configurable 2-10ms latency allows precise synchronization with video displays and other time-critical systems.

Broadcast & Media Production Facilities

Perfect for television studios, radio stations, and content creation facilities requiring multiple simultaneous analog-to-Dante® conversions. Interface talk-back systems, legacy broadcast equipment, analog mixing consoles, and outboard processors with modern Dante®-based infrastructure. The standard 1U rack design integrates seamlessly into broadcast equipment racks, while dual network redundancy with automatic failover ensures continuous on-air operation even during network maintenance or cable damage.

Multi-Zone Audio Systems for Hospitality

Designed for hotels, convention centers, and large venues requiring flexible audio distribution to multiple zones. Connect four analog sources (background music, announcement systems, event audio) and route them to four different zones or combine them as needed using Dante® routing. PoE+ power on both network ports simplifies installation by eliminating separate power supplies, while the web GUI allows facility managers to adjust levels and EQ for each zone remotely without accessing the equipment rack.

Educational Campuses & Training Facilities

Perfect for universities, colleges, and corporate training centers requiring scalable audio infrastructure across multiple rooms and buildings. Bridge classroom microphones, lecture capture systems, and legacy audio equipment to a centralized Dante® network for recording, streaming, and multi-room distribution. The 8-band parametric EQ on each input allows customization for different room acoustics, while delay adjustment ensures perfect lip-sync when integrating with video conferencing and recording systems.

Specifications

Technical
Network Bandwidth Dante® Network 1000M
Audio Latency Configurable Dante® device latency: Supports 2, 3, 4, 5, 10ms configurable using Dante® Controller
Audio Format • DANTE [Dante®/AES67 digital audio in/out, PCM 4CH 44.1K-96kHz, 16/24Bit]
• LINE IN [Analog audio, Balanced/unbalanced, Max input level 24dBu]
• MIC IN [Analog audio, Balanced/unbalanced, Min input level -35dBV]
• LINE OUT [Analog audio, Balanced/unbalanced, Max output level 20dBu, Min output level -18dBV]
LINE/MIC INPUT AUDIO
Input Impedance • 20K Ohm balanced
• 10K Ohm unbalanced
Input Level • Max 24dBu (12.28Vrms) @ balanced line audio
• Max 18dBu (6.14Vrms) @ unbalanced line audio
• Min -35dBV (17.78mVrms) @ balanced mic audio
LINE OUTPUT AUDIO
Output Impedance • 600 Ohm balanced
• 300 Ohm unbalanced
Output Level • Max 20dBu (7.75Vrms) @ balanced audio
• Max 14dBu (3.875Vrms) @ unbalanced audio
Frequency Response 20Hz to 20kHz (±0.5dB)
Dynamic Range ≥105dB @ +4dBu, 1kHz A-weighted
Audio S/N Ratio ≥105dB @ +4dBu, 1kHz A-weighted
Audio THD+N <0.01% at +4dBu, 1kHz
Transmission Distance 328ft/100m (CAT6/6A/7)
ESD Protection IEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge)
Connections
4x MIC/LINE INPUTS [XLR/TRS Combo, female]
[Line analog audio, Balanced/unbalanced, Max input level 24dBu]
[Mic analog audio, Balanced/unbalanced, Min input level -35dBV]
4x LINE OUTPUTS [XLR, male]
[Analog audio, Balanced/unbalanced, Max output level 20dBu]
1x DANTE PRIMARY [RJ45 locking connector, PoE+/PD (Class 4 IEEE 802.3at)]
[Dante®/AES67 digital audio in/out, PCM 4CH 44.1K-96kHz 16/24Bit, Web GUI and TCP/IP]
1x DANTE SECONDARY [RJ45 locking connector, PoE+/PD (Class 4 IEEE 802.3at)]
[Dante®/AES67 digital audio in/out, PCM 4CH 44.1K-96kHz 16/24Bit]
1x DC 12V IN [2-pin DC Locking Power Jack, Max 2.5A]
Mechanical
Housing Metal Enclosure
Color Black
Dimensions 440mm (W) × 200mm (D) × 44mm (H)
Weight 2.14kg
Power Supply • (1) 12V/2.5A 2-PIN Locking Power Supply
• (2) PoE+/PD (Class 4 IEEE 802.3at) on both Primary and Secondary ports
Power Consumption 10.2W (Test with 1Hz sine wave)
Operating Temperature 0°C ~ 40°C / 32°F ~ 104°F
Storage Temperature -20°C ~ 60°C / -4°F ~ 140°F
Operating Humidity 20%~80% (relative humidity, non-condensing)
Storage Humidity 10%~90% (relative humidity, non-condensing)

What’s in the Box

  • 1 × VLDT-XL44DB 4x4 Dante Audio Bridge

  • 1 × 12V/2.5A 2-Pin Locking Power Supply

  • 1 × Rack Mount Ears (1U standard)

  • 1 × User Manual

Frequently Asked Questions

What latency settings are available and when should I use them?

The VLDT-XL44DB offers configurable Dante® device latency of 2ms, 3ms, 4ms, 5ms, or 10ms (configured via Dante® Controller). Lower latencies (2-3ms) are ideal for live performance monitoring, stage communication, and applications where real-time response is critical. Higher latencies (5-10ms) provide greater network stability for large installations with many devices or when using longer cable runs. The 50ms analog delay adjustment allows additional fine-tuning for time alignment.

Does this work with other networked audio protocols besides Dante?

Yes, the VLDT-XL44DB supports both Dante® and AES67 audio protocols. AES67 is an interoperability standard allowing different manufacturers' networked audio systems to communicate. This means you can integrate the VLDT-XL44DB into mixed environments with Ravenna, Livewire, Q-LAN, or other AES67-compatible systems, providing flexibility in complex installations with equipment from multiple vendors.

How many devices can I connect on a Dante network with this bridge?

A single Dante® network can support thousands of devices. The VLDT-XL44DB contributes 4 input channels and 4 output channels to your network. With Gigabit Ethernet, you can have hundreds of audio channels flowing simultaneously. The limiting factor is typically your network switch capacity and proper network design, not the individual devices. The dual network ports allow daisy-chaining multiple units while maintaining redundancy.

Can I adjust EQ and gain remotely without physical access to the unit?

Yes, all DSP functions including gain, 8-band parametric EQ, and delay are configurable remotely through the built-in web GUI (accessible via any web browser on the network) or through Dante® Controller software. Once configured, settings are stored in the device memory and persist through power cycles. This allows system integrators and facility managers to make adjustments from a central control room without visiting equipment racks.

Is phantom power individually controllable on each input?

Yes, the VLDT-XL44DB allows independent +48V phantom power control on each of the four inputs. This flexibility means you can use condenser microphones (which require phantom power) on some inputs while using dynamic microphones or line-level equipment (which don't require phantom power) on others, all within the same unit. Configuration is done through the web GUI or Dante® Controller.

What happens if the primary Dante network fails during operation?

The VLDT-XL44DB features automatic failover between primary and secondary Dante® networks. If the primary network connection is lost (due to cable damage, switch failure, or network issues), the unit seamlessly switches to the secondary network with minimal audio interruption. When the primary network is restored, the unit can automatically fail back (depending on Dante® Controller settings). This redundancy is essential for mission-critical applications like live broadcast, concerts, and corporate presentations.

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